Now (I can't stress this enough)
mind-body dualism is not necessarily a dogma of the
Judeo-Christian worldview. It was Plato's idea. Blame Plato.
Problem is, most people would say that if there is no immaterial
"you" that survives death, that you just remain dead, because any replica of you created afterwards
may think it is you, but you, personally, are still non-existant.
Seeing personal-ness as a function
of divine consciousness fixes this little problem.
(Usually, my little mid-ramble links can be safely ignored, but I think
this one is important here. Props to Mark Stanley for saying it
better than I could.)