I went through something similar with my DH and he said pretty much the same thing as yours did (look the same etc). I made him ask our OB about it and she said that the one DR in Darwin who would do it would only do it once DS was 6 months old and if we could give 10 informed reasons as to why. She pointed out that the foreskin is like the vulva on a girls genitals. It is a natural form protection and that the argument that it is cleaner is out dated (personally I think if a man is having problems with it because it's not clean then he has a hygiene problem).
In the end I told DH that if our DS ever questioned why his was different to dads then he could just explain that everyone is different down there. I say and its just my personal opinion, it is natural, so leave it alone unless there is a problem with it. Circumcising on the off chance something might happen in the future is not a valid reason.

