Um the anus is full of bacteria. If you don't have extra marital sex the risk of disease is almost none existent. This is the meaning of the circumcision. If you don't put your privy where it doesn't belong you shouldn't have a problem. Its the facts. No ones judging anyone here its just the facts. Regarding masturbation I think almost everyone learns from it. Condoms don't protect against all std's either. Know that I would not wish to know the status of your privy.
from the article: Circumcision tied to lower prostate cancer risk, U.S. study shows