Circumcision is becoming Rare among most races in Europe. In northern Europe it has become so rare that it will probably be banned before long.
In many countries as it is not financed by the national Health Services, even those families that might have seen it as social conformity, are not having their sons circumcised.
Now that Female Circumcision is illegal in most of Europe, the whole question has been revisited.
There is no question that Jews and Muslims will resist this trend, in the same way that many Africans are resisting the ban on female circumcision. Last week the parents of a Young girl were arrested in England for having their daughter circumcised abroad. The European law covers the practice anywhere. The parents are required to protect their children from having it done, where it is done has no bearing.
As more countries ban male Circumcision, families will either have to comply, or live elsewhere to avoid criminal convictions. As of now that is not a problem for anyone, but it will become one.
The number of adults choosing to be circumcised for non medical reasons has always been minimal. I can not see it increasing just because it was not done as a boy.