... it's alright to do horrible things to infants...?
Never, ever, ever. No. Which is why I pointed out that in infants, if he is not crying before yet he does begin to cry during, then it's inhuman. The cry proves that it is non-consentual.
A baby is born with polydactyly and its parents consider (painless) surgery. Many people with this condition just ignore it and live their entire lives with it. Others hate it for various reasons. What should a parent do? What would YOU do for your child? Surgery is best done at an early age.
I think, as a general rule, that a human (or other animal) parent has the moral responsibility, no matter what others think, to do for his/her child the best that he/she knows how. Even if, from MY point of view, it's wrong. A killer whale grabbing a young seal from the shoreline and horribly tossing it about JUST to play with it, in MY point of view, it's wrong. But, as bad as it is FROM my point of view, it's nature and I would not stop it. I would cry deeply inside (just as I did when I saw the video), but I would not stop it. If a parent wants to cut his/her child WITHOUT trauma, then it is the parent's right (moral and legal) to do that. Even though I would object to the practice (moral or legal being beside the point.)
I firmly stand behind your right to object to circumcisions and the like. For the most part, I agree with you. True, I am uneducated in what is actually going on in the world regarding circumcisions. But I AM very well educated on what circumcision feels like, before AND after. I am cut. Unlike the position you have aligned yourself with, I am glad that I have lots of sensitivity "there". I am glad my Mom had it done for me. Yeah, it was a bit traumatic at the time because I was about 6 years old. But I'd be willing to bet that I am just as super sensitive as anyone can be "there". And, I am sure there are people out there that hate that they have been surgically adulterated. I am just as sure that there are horrible acts of mutilation going on that the individual will later on hate, as well.