Are most of us American? It seems like there are a number of Brits on here too.
I would have thought this would be a north american fetish, since most guys in the u.s. and canada are cut.
For me: American in the Midwest.
Most guys from where I grew up are cut. I have a few friends in high school who I learned were not. I've always kept my status to myself, even when it's occasionally brought up.
That said, I've never had anything bad said about it. I was the first cock for my first GF and she just learned with me. She did tell me that after she gave me my first (hers as well) blowjob and handjob that she asked her friend about the skin and her friend told her, "oh, that means he's uncircumcised."
My current girlfriend has told me that her first BF (his parents had moved from poland) was uncut, so it wasn't weird for her. Skin play is a regular part of any blowjob now.