Aschenkatza said:
Realistically, I want to freeze to death because I'm such a pansy about pain...
If I didn't care about pain, I wanna die from a Goat Attack. That would be so random.
Actually freezing to death can be relatively painful as depending the situation; it can be an extremely slow process. If you want realistically complete painless, go for dying in your sleep or in an instant from a car or plane crash.
Realistically I see myself killed in a car accident to be honest. I have no idea why, I just have that feeling, probably because I drive fast, albeit quite well.
Fantasy wise, I would go for the classic hero death, save the world, GF or something of that nature but die from the injuries (RL: gun shot; fan: epic sword duel) soon after. I am a sucker for tragic endings (think FFX)