This years celebrities consist of a Page 3 model who married a footballer, an ex-Eastenders actress, twin Playgirls (I can feel FD paying attention now

I can't recall how the subject arose but they got on about circumsision. I thought it was only a religious thing, or on medical grounds, that males were circumsised. Apparantly not in the States, according to the Playgirls (Karissa and Kristina Shannon) who say that all men are circumsised. Michael confirmed that this is, indeed the case.
They were shocked that this is not the norm in the UK.
What is the reason that males are circumsised apart from religious and medical grounds? Isn't that mucking about with nature?
BTW they said they didn't know if Hugh Hefner was.