We choose bitcoin because the returns it offers are too great, and we can't escape the temptation. If I were a millionaire, I would still choose gold over bitcoin, when I already have a lot of money, I don't need to risk investing in a risky asset like bitcoin. I still believe that profit is what we are all looking for with bitcoin and I don't want to lie about it.
Well no, it can be correct for many but definitely not for all: earn on bitcoin would be impossible if it hadn't some other benefits which attracted people much earlier than it got it's value. It was insane to sell pizza for some coins you can mint on your own PC: why? It was not as popular as now, but in those times it already was bitcoin and that's why some people already seen it's benefits and started using it. Nowadays many people still understand that bitcoin is not only about trading or investing, it is a representative of another type of finance, an alternative to modern system.