There are actually medical benefits. It reduces risks from insufficient hygiene considerably, which is a major concern for children. This is the main one. I've never even heard of any relation to STDs. As for the analogy to date rape, I'm circumcised. I'm pretty sure I don't feel anything like someone who's been raped.
Like I said. It only freaks out people who've never had it done, or those who had it done past infancy. I may be stepping over the TMI line here, but how many of you are circumcised? I doubt any of you who are speaking against it actually are. I've never heard a single complaint from anybody who actually was. Ya, it was probably painful for me when it happened, but I really couldn't care less now.
I had my kids circumcised, and I'm glad I did. I've never had to deal with being non-circumcised, so if they ever had any associated problems, I would be at a disadvantage in caring for them. I'm also thankful I didn't have to go through a ton of ritual fondling every time I changed a diaper just to keep them clean and free of infections. It's also long over with now, and I sincerely doubt either of them will ever give it anymore thought than I have.
Getting it done as an adult is not very comparable to getting it done as an infant, either. Kids go through so much in infancy. Both my kids were circumcised the day they were born, and I'm sure cutting of the umbilical cord and opening their eyes to the air for the first time were far more shocking than the circumcision. Such things heal much much faster in infants than in adults, kids are more physically and emotionally resilient in general, and yes I do think it matters that they're not going to remember it. The procedure is probably completely forgotten within a couple hours of it happening. There's probably associated pain when cleaning it for a few days, after which there's about a week longer before it's completely healed and there's no chance that they'll ever think about it again at least until they're teenagers and might ask a couple questions out of curiousity alone. As an adult it doesn't heal as fast, you're a much more emotionally complex and fragile being, the experience isn't likely overshadowed by massive changes in your reality happening at the same time, and you will remember it for the rest of your life.