At least according to Wikipedias map, which indicates it's at least as common as here in all but about a half dozen southern African countries, and more common in most (though the map is itself a bit misleading based on the article, since it sets the cut off (if you'll pardon the term ) at 80% and states the frequency here is 79%. )

http://en.wikipedia.org/wiki/File:Global_Map_of_Male_Circumcision_Prevalence_at_Country_Level.png

Given that includes a mainland Chinese population that accounts for about 1/5 of the planet, the articles "30%" global prevalence is also a bit misleading.

I'd never made a connection with masturbation, and still don't really get it; unless the procedure is very badly performed a child shouldn't even notice after a week or two, and certainly not years later. The main medical issue I see is that folds of skin are more likely to trap pathogens than bare skin, so a more aggressive level of hygiene will be necessary to ensure the same level of health. The survey responses from circumcised men who seem to feel they're traumatized victims are a little bizarre to me; as a circumcised male I've never felt the lack. Which is the problem with the whole "let him choose" philosophy: Severing part of a highly sensitive area is rather painful, if only after anesthesia wears off, which is why it's traditionally done at birth so the child has no conscious recollection of it. The notion that it inflicts some kind of life long psychological damage smacks to me of the same mindset that doesn't trust parents to make any other decisions for their own children. Sometimes I think parenthood is being slowly abolished and a literal nanny state taking hold, which is deeply troubling.