I don't think that foolish is the right word because many of us are only seeking to get good profit, we know that investing is too risky but we have to gamble to have profit.
Well, that's right. Bitcoin investors are not foolish, they are trying to take risk because in their mindset, they will win in that risk and they have the reason to make richer. They are investing because they wanted to gain many profits. But there are lots of ways to earn bitcoin without investing. But, it is not that easy. Patience, time and effort are the things that will needed in able to gain profits and it is not normal for beginners. Take risk if you are seeking for good profits.