Newborns are like fish...they don't really feel pain, do they? I mean if they did they would certainly tell us, right? Hell, pain builds character so screw it...
How about we start at a middle point with making the use of some form of anesthetic during the procedure mandatory?
As far as the medical benefit of "HIV resistance" post circumcision, it only holds true when the population in question has very sketchy personal hygiene practices, to the point that their unwashed penises suffer chronic inflammation due to large smegma deposits and anaerobic bacterial overgrowth. Like when you are left wandering around the desert for 40 years and cannot spare the water for a ... weekly shower?? Anyhow, relying on circumcision for STD protection is like hoping for bullet protection from a thick denim coat. It is a nonstarter from a personal protection point of view. Savvy partner selection and
correct use of condoms (pesky as they may be) are still the only truly safe way, short of abstinence, to protect against transmission of venereal nastiness.
Then there is the argument that the foreskin is just a flap of cosmetic skin and that there is no change in the mechanics of sex when it is removed. Others disagree and state that uncut males have a more sensitive.. penis due to more surface area and uninterrupted/un damaged nerve endings and therefore have the potential for enjoying sex more. Some women argue that the wrinkles of the pulled back foreskin create a distinct enjoyable sensation upon penetration. Some women argue that a circumcised penis looks "cleaner" or more appealing. These arguments are subjective and cannot be effectively proven or disproven, specially when most circumcised men never had the opportunity to have practiced sex with their foreskin to compare. Some argue that inelastic scar tissue that is left in an area that is rubbed and stretched causes pain that would not be if the area had been left unaltered. Some people scar better than others. Some argue that circumcision delays ejaculation and therefore makes for longer sex which is good. All subjective arguments. Since they are entirely subjective, should another party, be it your father, mother, legal guardian or gubbermint have power of removing something that is not recoverable, all in the name of "that's how we always did it", or "we know what's best for you"?
How your penis looks is about as personal as you can get and from a personal liberty point of view the decision to alter it should not be made by anyone but you.