Here in Australia it's pretty much only Jews and Muslims that still practice it.

I read somewhere that the majority of circumcised men under 45 in Australia were born elsewhere.

It used to be more common because of corruption in the healthcare industry.

The same as how doctors used to recommend smoking to pregnant women back in the 90s.

But we raised our medical standards and cut most of that corruption out.

Once doctors stopped recommending it the rates of circumcision dropped dramatically and it's been a steady decline every since.