I've been with, I think, roughly even numbers of circumcised and uncircumcised men. Uncut is better; when the head of the penis comes out it's wet and tender like an internal organ, something exquisitely sensitive, making cut cocks look dry and roughened in comparison. And the way the foreskin slides around inside me is a hell of a feeling for both of us. For these reasons, combined with a total lack of evidence of any benefits, I'll never circumcise any son of mine.
(I'm Jewish... this may lead to considerable family drama.)
But I can't be too vociferous about this, can't really start frothing about "mutilation" and "robbing sexual pleasure" because, well, the circumcised men I've been with have been fucking great. If lacking a foreskin makes sex 1% less fun, something else--enthusiasm or kinkiness or creativity--has always made up for it and more. And maybe they just didn't know what they were missing, but the guys sure seemed to enjoy it. It's hard to say if he's enjoying it to its maximum potential, but a guy without a foreskin can sure as hell fuck and love it and come.
In the end, it's like chocolate and vanilla; if I think about it I can decide I like one a little better than the other, but they're both delicious.
Well, except that to make chocolate you have to perform genital surgery without anesthesia on an infant for no reason. So I'm not way into it.