I'd like to live as long as possible, with the option of "turning myself off" for a period of time, with some kind of escape from dangerous or stressful situations-- so you wouldn't be living forever stuck in a box-- and with the option of killing myself-- with some kind of confirmation interval a few years apart, so I would be certain.

I like the idea of living forever, with a "psychic hibernation trance" ability-- so when the suffering of life became too much, I could have a means of "peaceful sleep" to get away from the intensity of prolonged life-- but without being gone forever --like dying for a short time, then coming back.

Sounds kooky, but it's my idea of a great life.