why chop a part of the body off. both my boys are not done, i left the decision up to DH, and he said the same thing. i did throw the negatives at him like infections, sex life later in life, cleaning etc, and his reply was, if you keep clean, there will be no infections, he has never had an issue with sex (neither have I with him) and you teach your child to clean their teeth, wash between their toes and behind their ears, this is just another part to keep clean.
sure, infections later in life are possible, but you don't take your babies tonsils out just incase they get tonsilitis later in life.
but in saying that, i do believe in choice and if a parent decides thats whats best and they can handle doing that to their baby boy, then who am I to judge!