I believe re-incarnation is a three part subject.
Firstly there is the re-incarnation we talk about where we are destined to live over and over again as our spirit does not die and therefore must be reborn into a human host to live again. Fun on the merry-go-round and the closest thing to imortality that I have yet found. .

Secondly there is the re-incarnation much talked about by religions like buddists. Where your soul must be reborn over and over to live your life and travel the path to ultimate enlightenment, and religious serenity.
Thirdly there is the re-incarnation much talked about by humans.
This one, I have to admit, I have trouble with. My main problem being that everyone of them that speaks on this subject seems to have been Cleopatra, Julius Caesar, Ghandi, Elizabeth The First, Dick Turpin, General Custer, Mark Anthony, etc etc etc............
No-one is ever just Jane Doe or Mr Nobody. Why not?
So to ask me if I believe in re-incarnation is an easy question, but it doesn't have an easy answer for me.
I believe our re-incarnation does exist.
I believe the religious re-incarnation could exist for those humans who work at it. (If ours is possible so is theirs!)
But I am sorry plain old 'just human' beings. I believe it is just not feasible. I cannot find any way to accept that you all could have been Cleopatra.
That's what I think.