Well the crypto will say the same thing about the non believer.

I took a pragmatic view: 1) it seems a useful hedge asset against stock market (although it becomes more and more linked nowadays) and other fiat money dominant security market. 2) it seems have some value of bringing financial products to more people (albeit today the new users are fleeced immediately when they enter the market, without getting any value from it). 3) it seems has a lot of engineers working in this space (which seems a good technical problem).