Is it really the best way to invest your money?
Because of the way Bitcoin generates value or becomes more expensive, it could potentially lose all its value and became worthless.
Who assures you that this will not happen?
If you look at it solely as an investment opportunity then yeah, maybe there are better ways of pure investments, but some investors believe in the concept of bitcoin, its potential as a disruptive technology, and the potential of economic freedom it brings to the individual, so I would say that it has intrinsic value for some people, it depends how you look at it. To me, BTC and crypto, in general, are a continuation of '80s hacker culture to some extent.