A few things strike me about this discussion.
Firstly, people don't seem to have made the distinction between circumcising tiny babies and circumcising older children. IMO, there is a bit difference, and I'm personally dismayed to hear that there's a trend towards having it done at a younger age in Morocco. The older child understands what's going on, and isn't strapped down. They also remember it happening, which helps them to make a balanced decision about having it done to their own children. By the way, apparently it isn't practical to leave it until adulthood, as it doesn't look as nice then.
Secondly, underlying many contributions is a very European view of self. Other cultures can have different attitudes about, say, personal responsibility. People see themselves as part of a family rather than an individual. So, instead of the consequences of your decision affecting you (ie the adult male choosing to have it done for himself), they affect your children. If you don't agree with your parents' decision, you can decide differently for your child. After all, presumably most people love their small children as they love themselves, and would make the same decision for them.
Another point is that Aloha referred to "pointless and outdated tradition." This isn't accurate because the reasons why people have circumcision done today are the same as they have always been, ie hygiene and aesthetic appeal. Personal hygiene is considered far more important in North Africa for example, than it is in Britain. One example of this is that North Africans wash themselves with water when they go to the loo, and they regard Europeans as dirty, because they only wipe themselves with dry loo paper, which can't be as effective. Also, in hotter climates, hygiene is far more important because bacteria spread more easily. So that is a big factor.
The aesthetic appeal factor is also huge. Most Berber women won't even consider marrying an uncircumcised man, much the same as a non-smoker in the UK would tend to rule out smokers as a category when seeking a spouse.