Richard Dawkins, at least on youtube, sometimes seems like the pope of atheism. I only watched one video of him recently where a Muslim posed him the question of the conundrum of morality without any consciousness after death, which reminds me of your concern with atheism. Taken to its conclusion, consciousness ending with this life often leads to hedonism- simply trying to enjoy this life as much as possible since it's all we get. This hedonism does not end well, because sensory pleasure is transitory, and generally leads to seeking of bigger and better thrills. Think about the development of movies and how the frame switches keep getting faster and faster as the years go on. People want more entertainment. Same with heroin- fun at first, but then you need more and more and eventually it doesn't get you high any more but you have to keep taking it to avoid the withdrawal sickness.
Ivan Karamazov in Dostoevsky's the Brothers Karamazov famously observed "If there is no god, then everything is lawful." Atheism inevitably leads to self interest, because atheism is not, in truth, the absence of a form of worship- it is worship of the self. All action is simply to the end of serving and gratifying the self, whether for the fulfillment of genetic programming or for aesthetic gratification, and in this case the self takes the place that the Creator takes in other belief systems.
A false god can be a single self or a composite self, an abstract concept or constellation of concepts personified or not. Justice, democracy, freedom, or other ideals are examples, even nature, as distinct from culture would be such a false deity. These concepts are worshiped because an individual or collective identifies with them- we are freedom loving Americans, so we worship our collective ideal of freedom, we are communists so we worship the ideal of the working class, so on and so forth. So in short the gods of atheists are contained in their own identities. God in this sense is just something that is worship, and worship is a form of service. We worship communism because we believe that it will benefit us by fulfilling a longing for social justice, or we worship freedom, believing that by devoting our energy to this concept we will attain freedom from our fears of hunger, loneliness, or inability to attain desires.
This inevitably leads to conflict both within the individual and between individuals because the concepts are manifold and the understanding thereof can shift. I may believe in both social justice and freedom, and then my psyche is losing precious energy debating within itself how to reconcile these two seemingly opposing concepts. Should I make forum posts talking about the virtues of a free market economy, or should I write about the plight of factory workers in Bangladesh? Or who is better, those who worship at the temple of Shiva, or those who go to the temple of Vishnu? Who is better, Thor, or Freya? This divides communities who get lost in debate, as well as individuals who then have to devote more and more processing power to distinguishing and weighing the advantages of different concepts/deities.
Monotheism solves this problem with a transcendent and all encompassing Creator and Sustainer. God in this sense refers to the eternal, self-sustaining, self-existing reality that transcends space-time. This is the only possibility to serve all equally, and is also the optimum from the limited grasp of human reason pursuing self-interest, because:
1. The law of causality is clearly visible. There is no action but has an effect- there is no perfect vacuum.
2. Therefore, everything is interconnected.
3. Every action will eventually return in some form or forms upon the actor.
4. Actions intended to benefit the actor by devoting energy to a non-transcendent concept/deity are ultimately fruitless, because they prioritize one concept/deity above another thereby creating enmity between them. The more I support democrats, the more insulted republicans are going to feel for my lack of support, thereby leading to conflict and resistance among republicans to the goals I wished to achieve by supporting democrats. If I spend more time in the temple of Athena than the temple of Apollo, my friends in the temple of Apollo are going to feel resentment because I am neglecting the worship of the ideals that they love.
5. Therefore, any action meant to benefit a part of reality in order to benefit myself is in effect an insult or neglect to another part of reality, or the action that is positive towards part of reality is negative towards another part of reality, and this negativity will come back to me due to 2.
6. The larger a portion of reality I devote my energy to, the more benefit I will derive from it. If I support the ruling party in China as a Chinese citizen, I derive much more benefit than if I support a Tibetan resistance movement.
7. The optimum course of action is then to devote my energy to the biggest portion of reality possible. This is variously referred to as Supreme Being, God, Allah, the Creator, the Most High, according to regional variations. Any devotion of energy to any temporal concept will therefore be to my detriment because I will have lost time I could have spent devoting to the Most Beneficial. which encompasses the temporal and non-temporal.
So even according to limited human reasoning, belief and worship of a concept that transcends the sum of all phenomena is the most beneficial in terms of pure self interest. If we examine the claim that religion is given to us by a transcendent Truth which is conscious, we can see that the conclusion that the worship of the greatest reality is the most beneficial course of action lends credibility to this claim. In short, a religion claiming to be from a the Most Kind, and Most Generous, could only be a religion that is most beneficial to those who practice it. Therefore:
Any recommendation of worshiping the greatest portion of reality, which is not a portion but greater than the totality is optimally satisfactory to self-interest.
Any recommendation to worship what is less than the Greatest is less beneficial and therefore not optimal for satisfying the requirements of self-interest.
This is the criteria for distinguishing Truth from falsehood. According to this criteria worshiping or serving the following is falsehood:
-The moon, sun, or stars.
-Animals, birds, fish, insects, griffons, chimera, humans.
-Fire, water, metals, earth, stones, plants.
-Ideas, constructs, buildings, ideologies.
The Truth is anything that enjoins the worship of That Which is Greater than all of the above combined.
As the moral fabric of materialist societies continues to disintegrate, so will social cohesion and the chances of survival of members of those societies. The stronger the belief in the truth of the transcendent Truth, the more actions will be devoted toward the Most Beneficial, and the more benefit will be derived.
And the punchline:
The fact, as established above, that reality is ordered to the benefit of those who believe in the transcendent Truth, is proof of the existence of this Truth as the source of all phenomena.
Sorry for going on so long, I understand if anyone skips over this and thank you to anyone who read the whole post. In short, I agree with this problem with atheism, but luckily Camus said in a Summer in Algiers "Nihilism contains the means to move beyond nihilism." Ultimately total selfishness leads to total selflessness, since service to all is of the greatest benefit to the individual. The elegance of this arrangement is sufficient proof. May we be blessed with belief in and understanding of this Truth if we want.