A cave man who has all his needs of life fulfilled, and sits comfortably on his log or stone chair covered with soft skins, at the entrance to his cave, and enjoys as he watches the rain gently coming down, has way more peace than a bunch of jokers who are trying to get through traffic twice a day, and scrambling to make ends meet, go to an early grave because of stress.
If cave man had it so great, why don't you sell all your belongings and try to live that kind of life. Simply give up on all the progress we made through thousands of years and live stress free and relaxed lifestyle. If that sounds so appealing to you, try it, and let's see how long will you last.
There are hermits that live that kind of life, be one of them if that is so great, put your money where your mouth is
I agree. You go to the cave of your apartment, or the cave of your house. You go in through the doorway cave-hole. You have succeeded in becoming a caveman.
There are loads of people doing this by moving to places in Mexico, Central America, South America, Southeast Asia, and loads of other places just to get away from the controls of the rat-race you are in.
Some of the cave-people enjoy a hermit's life. Others take their families with them. The fact that some people are smart enough to revert to caveman life, and that they can actually do it if they try hard enough, shows that we are living in one of the best periods known to man.