I think one needs to update and replace them too often and that's room for many mistakes and failures. Most people are not tech-savvy. I would say 95%.
I would rather keep my BTC with PayPal.
That's supposed to be a joke. But is it?
They never lost my money so far.
Crypto? I lost so many keys, accounts, and coins I could write a book about.
But hey. I'm just an oldtimer on the blockchain. Don't take me seriously.