[Altair]

It may be interesting to reincarnate in the past, well sometimes (!)
But I don't think this makes any sense.. because you could mess up other people, and if you're someone important.. events and outcome of history..
Think about those Back to the Future movies. I think the past is the past, we can only change things now..

Who's to say the future couldn't provide what you needed..?
Or maybe live life on another planet? :)