First of all, it's the worse thing anybody can ever do to a penis. It angers me how many women do this to their kids, a woman shouldn't have a say in what happens to the penis.
It kills 20,000 nerve endings and it also makes the head less sensitive. Since it isn't covered when not flacid it rubs against jeans/underwear ect ect so it's less sensitive.
Also condoms are designed for uncut penises, why? Because for the most part everyone being cut is a Jewish and American thing. Most South American countries don't circumcise their kids. European either, I think - all the European guys I've fucked have been uncut.
Either way circumcision is a horrible thing and should be decided by the person who's penis it is when they're an adult.
Why would you want to get your penis cut when youre an adult LOL atleast when youre just born you don't really feel it =S but who really curs a dick is a dick!
Studies have also shown that adult men, let's say...after 30 begin to resent their cut penises.
It's one of the things that happens when you're older and have slept around - you realize "damn my mom fucked me up I wish I was uncut".