The American Association of Pediatrics has released a report that favors male circumcision on the grounds that it reduces the spread of sexually-transmitted disease among promiscuous heterosexuals.
Perhaps the most powerful evidence in favour of circumcision comes from randomized controlled trials in South Africa, Kenya and Uganda. These found that, for men who have sex with women, circumcision reduced the risk of infection with HIV. (No protection was observed for men who have sex with men.) The South African and Ugandan trials also found that circumcision reduced infection rates for human papillomavirus (HPV) and herpes.
So if you have a sexually-active infant, you should talk to your pediatrician about getting him circumcised.