I love how these debates stretch out over 14 pages. I also love how anyone who is circumcised seems to get monumentally insecure at the mere suggestion that there might be anything.. not even "wrong", just completely unnecessary.. about cutting off someone's foreskin before they're old enough to consent. I can only imagine it makes a lot of people feel like they've been mutilated but still.. jesus.. calm down, noone is that interested in your penis. You're fine either way, it's not that big an issue, however it's also completely unnecessary.
There are a lot of misunderstandings about circumcision, so here's what I've learned over the years.
* Circumcision became popular in the US about 150 years ago for two reasons, firstly because some doctors claimed it would prevent syphilis transmission (which was epidemic in America at the time), but more importantly because it was believed to prevent masturbation, which at the time was being blamed for practically every sexual "dysfunction" the Victorian mind could catalogue (and that's a fair few).
* Circumcision does have a very slight reported effect on the transmission risk of some STDs. However, this only effects transmission from the "receptive" to the "active" partner, which is the least common type of transmission. If you're a circumcised male, your partner is absolutely no safer.
The differences we're talking about are also so negligably small that they're hardly worth mentioning. I'd suggest with the risk of accident or infection (any open wound can become infected) during the circumcision procedure, you're really no safer either way.
Anyone in any kind of situation where there could be an STD risk needs to wear a condom and wear it correctly. Anyone exposed to HIV needs to try and get PEP within 36 hours. That's the end of it really. Being circumcised will not protect you from anything, so any debate about its utility is fairly meaningless.
* The smegma which forms under a foreskin is not dirt, it's a residue left by the natural cleaning and lubricating agents produced by the body. It's easy to wash off and there's no reason why a circumcised penis should be any cleaner or fresher as long as both owners remember to wash themselves. It's certainly not germy or an infection risk, in fact one of its functions is as an antibacterial agent.
* Some people experience a loss of sensitivity after being circumcised. There are a range of reasons for this, primarily that the foreskin has a lot of nerve endings in and of itself. The loss can vary enormously from person to person, but very rarely impedes sexual function.
* On the other hand, it's much easier to get a glans piercing when you're circumcised, and some people find this helps negate the loss of sensation.
So really.. it's not a big deal either way. Some people also think it looks better, but I find that tends to be cultural. None of my friends in the UK seem to be particularly enamoured with circumcized cocks.
I tend to come down on the side that says you shouldn't modify someone's body out of vanity before they're old enough to consent, and yes that includes piercing your children (although piercing is at least reversable without major surgery). I'm semi-okay with it for religious reasons, and totally okay for medical reasons, but a lot of people seem to come out with complete bullshit about the whole topic and it doesn't fill me with confidence that they're choosing for good reasons.