The chances that BTC (or any given crypto asset) goes to zero right now (or in the near future), with the information we CURRENTLY have, are low...market gyrations will happen, things will fluctuate +/- 20, 30, 50%, maybe they'll all go up 10x, maybe 100x, etc.

As long as folks believe there's a get rich quick possibility (or believe in the viability of crypto assets, or whatever), things will keep on as they've kept on.

HOWEVER: What that line of thinking misses is the possibility of new, external, market-shocking information. I don't know what that is or could be (the ol 'we don't know what we don't know'). Maybe someone discovers a massive and fundamental bug that renders them useless. Maybe quantum computing advances faster than we think and factoring large numbers becomes trivial. Maybe ______, maybe _______, maybe maybe maybe.

THAT is what could bring it all to $0. That's what you should be worried about. That's why this isn't a sure thing for ever and ever.