Scientists.
[spoiler]you'd be the ultimate guinea pig.
They'd "kill" you over and over again to see what you could survive [/spoiler]
Edit : 1
Family seems to be the prime reason for alot of people here
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You'd have to find an amazing source of income. Something on the down low & you'd have to move around a lot. I guess you have the opportunity to learn a lot & meet a shit ton of people. On the down side, you'd watch them age and then die. Lonely again.