This is one of Gigi's (@dergigi) favorite questions to bitcoiners, which he asked on a German podcast last week.
The hosts answer:
If I were to be completely honest, I think I would fall into a very, very deep depression. And I would assume that all the contacts, all the friends that I have made, that I will lose them because there is nothing left to bring us together. And that's a very sad prospect at the moment. It hurts a bit that you asked me that question.
Gigi's answer:
I would probably move to a regenerative farming community with all my bitcoin friends and live without money.
My answer:
Unfortunately I have to say that it probably wouldn't change much for me. I'd be saving in stocks instead of bitcoin and hopefully still going to my local meetup and talking about what if bitcoin hadn't died.