What problems do you see infinite blockchains solving?
No comment on whether or not a crash is inevitable, who knows where the price is going. That's not really too important to me. But the fact that Bitcoin is for now the most secure and technologically sound blockchain is what makes it interesting. And actually having those unique characteristics is what makes it special. I definitely don't see much special with 'blockchain the data structure' on its own.
I think forks are definitely the biggest concern for Bitcoin. I think most longterm holders arent realizing how big of a threat it is.
Bitcoin Cash is still around and can probably stay around for a long time reusing Cores work. Other forks will be less friendly and won’t preserve Bitcoins transaction history.