Buying a whole bitcoin is a good investment the only problem is that for a long term investment 1BTC is too little, I think is better to concentrate on increasing your current earnings that in long term investments for you right now.
You got the point of it, if you are intending to plan and make some investments with bitcoin for long term then probably 1 bitcoin is not going to be enough or if you are going to get some profit with it what is going to happen is that you are just going to get small profit from it. But still it depends to the investor of how much is going to be his capacity.
For some people 1 BTC may seem like a "low" number even though the far majority don't even own that amount, but some people really believe the price will go to $5000-$10,000 at some point in the future. Whether or not this will happen is another thing, but with that in mind, then 1 BTC is a more than decent amount to hold.
Gambling should never be an option or way to try to increase your coin count. Depending on luck is not the way to do things. People will end up losing all their funds in the long run when their (assuming they are very lucky) winning streaks end up in a bad losing streak where it won't be possible to recover from. And if you are with bad luck from the very beginning, then you will lose all you have directly.
I agree gambling should not be a choice too because that is not going to make you productive at all. But if you are going to hold it for a long time it is going to give you profit by just doing nothing and you are just going to wait for somehow until the price is going to be acceptable to you or else you are going to trade for a long time.
