My son is due in 7 weeks and he will not be circumcised. I am not and I am 34, and have not had a single problem from having my foreskin, and I like being uncut.
A few of the things that pro-circumcision people put out above are not true:
UTI's, while this is still on the AAP's list of benefits, if you read their full circumcision statement, they aren't all that sure about this. From the AAP's website *1:
Few of the studies that have evaluated the association between UTI in male infants and circumcision status have looked at potential confounders (such as prematurity, breastfeeding, and method of urine collection) in a rigorous way. For example, because premature infants appear to be at increased risk for UTI,75-77 the inclusion of hospitalized premature infants in a study population may act as a confounder by suggesting an increased risk of UTI in uncircumcised infants. Premature infants usually are not circumcised because of their fragile health status.
Cervical & Penile Cancer *2 (American Cancer Society):
Statements about circumcision preventing penile cancer and cervical cancer are cropping up on the Internet. A two-year-old letter being circulated on the Net discussing scientific evidence regarding penile cancer and its relationship to circumcision is personal correspondence reflecting the observations of two former ACS physician staff members. The American Cancer Society does not have a formal guideline statement on circumcision
....
However, the penile cancer risk is low in some uncircumcised populations, and the practice of circumcision is strongly associated with socio-ethnic factors, which in turn are associated with lessened risk. The consensus among studies that have taken these other factors into account is circumcision is not of value in preventing cancer of the penis.
Hygiene *1:
Circumcision has been suggested as an effective method of maintaining penile hygiene since the time of the Egyptian dynasties, but there is little evidence to affirm the association between circumcision status and optimal penile hygiene.
STD's, it is really not worth mentioning, STD's come from unprotected sex. Studies showing circumcision reduces STD's have been disproved. If anything the US is mostly circumcised and has the worst STD problems of any first world county.
I personally don't remember having any problems showering at school and being teased, but I am not the type to take any crap. But this really will not be a problem in the future. Here is a link to an MSNBC Poll on Circumcision:
http://www.msnbc.msn.com/id/19296194/
43% For Circumcision
57% Against Circumcision
The Circumcision rate right now in the US is dropping and is currently around 50-50. Your child will not be the only uncut boy in a gym class.
Globally only 15-20% of men are circumcised. It was once trendy in other parts of the world but has gone away. As it is the United States is the only First world country to circumcised for health reasons. If you would like good information on circumcision with out bias, I would look to www.nhs.uk, the UK health care system.
The Old Testament says all Jews should be circumcised. The New testament says it doesn't matter, and gets you nothing.
The best reason not to circumcise your son is that it is not your penis. He will have to live with it every day for the rest of his life. While most men don't have problem being circumcised, it is more because most guys they know are. In the future with circ rates dropping, you will probably see more men unhappy to be circumcised. To be honest I would rather have a son that is unhappy being uncut, than be a parent of a boy that is unhappy being cut, as there is no undo.