Circumcision isn't actually obligatory for Muslims, and isn't mentioned in the Quran. It is however customary, and seen as a good thing - and the kids don't get any choice in the matter.

Less brutal than "female circumcision", but I can't see the logic in denying that both are forms of genital mutilation imposed on children by parents, and that both are in fact widely seen as being carried out as religious requirements.

One of my son's friends had it done when he was marrying a Turkish girl and (sort of) converted. Now that's certainly a way to show serious commitment. And he got to choose it himself. (Though not exactly a free choice, since without it getting to marry the bride would have been pretty problematic with her family.)

Circumcision might indeed "reduce" the risk of getting aids, but it'd still leave a peculiarly nasty form of Russian roulette. And it wouldn't in any way reduced the likelihood of passing it on, so far as I've heard.