Can you please explain why circumcision is so popular in the u.s.?

Personal preference: A few cite easier hygiene, decreased std's over a lifetime, elimination of foreskin cancer, etc. The main factor seems to be personal preference. Daddy wants his boy to look the same. I see occasional uti's primarily in uncircumcised boys, but that is uncommon. Rates vary throughout the world. While in the military it was the most requested elective surgery among shipboard sailors.