I thought reincarnation included animals. Weren't all Democrats jackasses in their previous life? Oh wait...they still are. Nevermind. 
For some, that would be an insult to jackasses, which are hard working, noble creatures.
For me, you can extend the analogy to all humans, not just the dems.
You know I'm just messin' Gramps.
Gramps
When you were born, you were the:

2,665,729,377th
person alive on Earth
75,962,976,850th
person to have lived since history began
I got here WAY before you, Z!
But seriously, the numbers show how dumb the idea of reincarnation is. There just weren't enough people back then to cover the number of people walking around now.