I don't live in the US but circumcision is still a pretty common thing here -_-. Of course I'd date a guy who is uncircumcised, and I did - my husband is uncut. Pretty sad that there are actually girls out there who would dump a guy over something stupid like this.
I've only had experience with circumcised penises... but, I have absolutely no problem with uncut. In fact, I feel a bit bad about circumcision in general because I believe it's absolutely unnecessary.
But as for the appearance? Yeah... it might take some getting used to. But I don't find them any less attractive.
And in fact, I heard that it can feel better for both parties, so I'd probably be a bit excited about it. Plus... I think giving head would be much more fun to play with since there's more to it. And I LOVE giving head.
Guys were circumcised to stop them from masturbating (some for religious reasons) back when masturbation and sex in general was very taboo (for the girls they wanted them to put acid on the clit... I'm glad that didn't catch on) The foreskin holds many nerve endings and protects the dick from being desensitized. Some say they circumcised their child so they won't get infected but only a very small amount of men get an infected foreskin. If you washed properly then there should be no problem with infections. Back to the original question, I have no preference as long as we are compatible and are kinks/fetishes match up ;)
I read online once that if a guy does a slow pullout, his foreskin will wrinkle up an rub on the g-spot. Possibly feels better on women. Either way a man should be able to please you if he loves you and shows affection and effort.