Most Americans don't think about circumcision much. It is just another standard medical procedure done in the hospital (e.g. like cutting the umbilical cord) that is done to newborn boys and it is not a big deal. There is nebulous and vague talk of "benefits" and hygiene. Most Americans are ignorant on this subject.
Rational open-minded people are nearly always convinced by talk of ethics and accurate information that cutting their children's genitals is wrong.
Some honestly and truly believe that the "medical benefits" outway ethical concerns. Men do not want to admit that something is wrong with their penis. Men want their penis to be better ("male enhancement products" are commonplace in American culture)! It is easier for a man to believe that the foreskin is a useless flap of skin than to believe his penis isn't perfect. These men tend to have their children cut so their sons' penises aren't better than theirs and/or so they don't have to admit something was taken from them.
The most voracious and dangerous circumcision advocates are the circumfetishists. When I first heard this term, I honestly thought it was just a derogatory term that I² advocates used to describe those who support circumcision. Later, when I stumbled across circleaks.org, I began to realize that circumfetishism is real and it is actually is a "fetish" or, more accurately, a form of pedophilia. I read some of the circleaks.org content with my mouth literally hanging open, aghast. I had to stop: the content made me sick to my stomach.
Sex and sexual arousal are powerful human motivators. The sexual motivations of circumfetishists and the thrills that they obtain from thinking about, writing about, watching, or participating in circumcisions results in immutable beliefs.
In looking through the types of disturbing content posted to circlist, it became clear that the circumfetishists enjoy the fact that they are circumcised and some even want to get circumcised again! Now this is looking more like self-harm. The following statement from the Wikipedia article clarifies my point:
The sexual organs may be deliberately hurt as a way to deal with unwanted feelings of sexuality, or as a means of punishing sexual organs that may be perceived as having responded in contravention to the person's wellbeing (e.g., responses to childhood sexual abuse).
It is my belief that the majority, if not all, circumfetishists are victims of sexual abuse. Some of the posts from circlist captured on circleaks.org imply or explicitly state this fact. In order to realize circumfetishism, that abuse, combined with a sociopathic personality, sadism, and masochism results in an individual who enjoys and obtains sexual pleasure from both his own circumcision and that of others.
As abuse victims, I would otherwise pity the circumfetishist—but their vile behavior and actions qualify them as evil. These individuals must be stopped.
P.S. If you do desire to have your son circumcised, you will want to look at the doctor's groin during the circumcision. It is not unheard of for him to get aroused during the procedure. Let's hope this disturbing thought results in reconsideration!