My experience is pretty different from most guys here. I grew up in a super religious household. I have a ton of brothers and none of us were circumcised. My Dad was, so I'm not really sure why we weren't.
My parents were good about making sure we knew how to take care of ourselves. I remember my mom telling us, when we were little, that when we got older, our foreskins would stay back. I'm not sure what she really meant, but for awhile I thought that my foreskin would stick in the retracted position when I was an adult, essentially making me look circumcised. That definitely created some confusion as I got older and my CI-9 foreskin always covered my glans.
My brothers and I were home schooled, so we didn't get a lot of social interaction. Of all the penises I had seen, cousins and friends, my brothers and I were the only guys I knew that weren't cut. No one ever said anything about us being different, but I always felt like the odd man out, even though my brothers were the same as me.
As a young adult, I didn't really like my foreskin. I considered getting circumcised just to be like everyone else. I was especially worried about what girls would think of it. Thankfully, I didn't go so far as to do anything about it.
My wife loves my penis the way it is. I was so scared the day she asked me whether or not I was circumcised! I asked her if she knew what the difference was and when she said no, I very nervously explained the difference to her! It was actually a pretty beautiful moment. After hearing my explanation, she had no reservations about my not being cut. After she did some research, she has become an advocate! She has actually informed a couple of her friends that I'm uncut and told them that circumcision is barbaric!
I have been getting a lot more confident in my body, much of it thanks to my wife. I am so happy that my parents left me all natural. I still haven't got to the point where I am comfortable being naked in front of anyone other than my wife, but I hope to someday be able to show off my foreskin proudly. One thing I have been able to do is start a blog where I can share some of my fantasies, all of them involving uncut guys like myself. You can check out uncuterotica.com to have a look.
All in all, I haven't really had any bad experiences growing up intact in the U.S. but, I did have a lot of the same insecurities a lot of us have, being in the minority. I am looking forward to the day we're in the majority and a young man doesn't give his foreskin any more thought than he gives his nose, his hands, or the rest of his penis. Kinda like it is in Europe.