Most Helpful Guy
Ohhhhh boy. I would pick 10 lives that last 100 years each, for my own benefitB. But, would I remember my past lives? Would I remember everything I learned? If so, then I'd definitely pick that option.
If not, then I would pick one life that lasted 1,000 years. In that amount of time, I could obtain the wisdom and knowledge necessary to subjugate humanity and get them to stop killing each other and being greedy and all around distasteful. i. e., creating a better world. Especially so if my life is going to last 1,000 years, so I'm basically immortal until 1,000 years is up.3