the cut vs. uncut discussion is akin in today's society to the shaved vs. unshaved discussion for women.. it's a preference thing
from an evolutionary standpoint, the foreskin on the penis was once necessary to protect it from being hurt in a hunter-gatherer environment, but since it is now stowed away 99% of the time inside of underwear inside of pants, the protection aspect is moot.
i can only assume that a circumcised penis is easier to maintain proper hygiene with
in adult entertainment (yes fellas, porn) it is far more common for the man to be circumcised, so it is likely that a circumcised penis is what the girl would be expecting - might be some shock factor if the draws come off and she doesn't know what she's looking at, or thinks it's "gross" because that's not what she thought it was supposed to look like..
just what came to mind - hope it helps