At The Dilbert Blog, Scott Adams is thinking about cloning. Read all of what he has to say, but here’s his theological thinking:
The big question with clones is how they get their souls, assuming souls exist. If God gives them brand new souls, then they aren’t actually clones at all. They’d be fundamentally different. But it also makes God more of a soul gumball machine than the omnipotent creator of the universe. The scientist who makes the clone would, in effect, be controlling God by making him pinch out another soul to inhabit the clone. That’s disturbing on many levels, not the least of which is the way I phrased it.
But maybe your clone gets half of your soul, say 10.5 grams worth. That would suck too. I have enough trouble dancing with the little bit of a soul I allegedly have. If you cut that in half, I’m polka dancing.
If each of your clones has a new and different soul, but everything else is the same, we’d probably start assigning letters to keep them straight — A,B,C, etc. And that suggests the one best reason to not clone yourself: Everyone would call you an A-soul.