If I were to invent something like bitcoin, I would use your exact logic to decide to burn the keys. I couldn't trust myself, so I would remove the possibility of agonizing over it. Obviously, I still might feel regret, but I'd choose the potential regret over the potential agony.

Hell, even if I didn't burn the keys initially, I might do it as I observed it starting to take off. I'd be more attached to the idea and its success than to the idea of being filthy rich (and at risk of jail, extortion, and murder). It would feel like a giant middle finger to the parts of the system I disliked.