The only way I would choose forever is if I'd get a chip or something under my skin.
Removing this chip would kill me within the hour. This way, no matter where I am, I could pick my skin and remove it and die if nessecary. Don't want to get crazy after x amount of years.
There is the option of becoming trapped under rubble so I can't move my hands, but that is the chance I am willing to take.