Think about all the reason of circumcision:
Hygiene. You do take showers and baths. So you get yourself cut, only to take a shower ANYWAY?
It prevents HIV. Bullshit. I dare any circumcised guy right now to have unprotected sex with an infected partner. So you get circumcised only to wear condoms ANYWAY?
It prevents cancer and other infection. Chances are, your lungs and other part of your body will kill you with cancer than your foreskin. Removing your foreskin to prevent diseases is like removing any part of your body. Chop your fingers off. You can be sure you will never get it infected, or have a hang nail.
Finally, why would you expose what is a sensitive part of your body to constant outside stimuli? Circumcision do not prevent masturbation, but one thing about having a foreskin, you don't need to rely solely on your hands.
To the person who started this thread, I don't know why you would even consider this operation.
I can say it does reduce HIV (and many other viruses) transmission; this is commonly accepted and quite scientific. I had taken virology courses a while back, and I remember. I don't know exactly how it works, but I heard that this rule was proven to work only in heterosexual pairs. Haha. Condoms are the golden standard anyways.
Urinary tract infections are more common in women simply because of the anatomy, but in men circumcision does make a difference, and not just beacuse you remove what can get infected. It's the hygiene thing. Maybe here in America or Europe it is normal to take shower every day, but in some deserted countries (say, Middle East) there is less access to water, people take shower (and wash their children) less frequently. That's where circumcision can make statistically significant difference, imho.