I have no religious reasons to be circumcised. Hell, even if I were part of a religion that had it as the norm, I'd keep my foreskin. I'm sure God doesn't care if I masturbate. After all, that whole "man in god's image" implies to me that God jerks off, too. But, not religious or even vaguely spiritual, so. XD
There's no reasons, really, so unless my doctor were to go, "OHMYGOD YOU'RE GONNA DIE OF X IF WE DON'T CUT IT." and it were serious, then I'd have no choice.
But personally, I think cut dicks look blucky, so I would keep it.
Don't FTM dicks (meto/clit enlargement) have foreskins? Can those be cut? o_0