I can imagine several scenarios in which BTC goes to zero. Some have even happened. You lose your key, or get hacked, or send to the wrong address and everyth

I can imagine several scenarios in which BTC goes to zero. Some have even happened. You lose your key, or get hacked, or send to the wrong address and everything you invested is gone. Oh, and if someone manages to reverse SHA256, or finds a vulnerability in the public key scheme it all becomes worthless instantly... That is if they don't keep it secret and milk the whole thing for everything it's worth.