Aside from possibly making your fortune, there is a very sensible reason to invest in Bitcoin: it could be a good move when inflation hits.
I decided to buy Bitcoin twice. The first time was in 2019. I chickened out and sold my holdings without gaining or losing much. Last year I bought again, with more resolve.
I’m usually fairly risk averse. But I decided I needed to take a few more risks so 2020 I invested a small amount in a fraction of a Bitcoin. A week later I did the same thing. When I bought in, the price of Bitcoin was a little over $15,000 (although each time I bought only a fraction of one Bitcoin).
I told myself I would hold for the long run, or at least until the next price spike. I didn’t have to wait long, as the next graph shows. When I sold my fractions a few months later, the price was around $45,000. I had almost tripled my money.