It isn't tradition. It's an intrinsic part of those faiths. Surely respect for other people's religious beliefs should be part of any civilised society
Some religions and cultures have beliefs that are retrograde and barbaric- should we allow them to practise those?
So, many cultures don't believe in educating girls for very long, if at all- should we accept that?
Many cultures believe in subjugating females, that they should have reduced rights, opportunities, and freedoms- should we accept that?
It was the norm to circumcise boys in UK up until 20th century- but we don't do it today.
If God made man in his image, what gives man the right to immediately alter his work after birth?
Circumcision is barbaric, and should be allowed for all but absolute medical necessity.