Bagging, I take it you mean that there are other decisions we make on behalf of our children? Well yes, there are plenty.
I have to decide which school they will go to, because they don't know enough about education to make that decision for themselves.
I choose (largely) what they eat, because if I didn't, they would eat bread/chocolate/cheese/sausages all the time, and overwhelming evidence suggests that such a diet would not be healthy, and could make them overweight.
I decide what time they go to bed, because if I didn't, they'd stay up all night watching crap cartoons on Youtube, and not be fit for school in the morning. And because I like some peace and quiet of an evening.
In all of these cases, I am making decisions based on overwhelming evidence about what is healthy and sensible. Feeding them a very unhealthy diet and letting them stay up late every night could constitute neglect, could it not? None of these decisions involves putting them through a medical procedure to remove a part of their body.
Just out of interest (and they're nosy questions, so feel free to ignore)... Am I right in thinking that you were circumcised as an adult because of a medical problem? If this is the case, I wonder why you had not chosen circumcision prior to that, because of the benefits as you see them. Have you ever wished that your parents had made that choice for you when you were an infant?