Individuality is frightening to those whose identity is totally wrapped up in the group. And so, just as the cutting of the hair in the military sends the message that the individual is now the property of the state, the cutting of the penis sends the message that he is now the property of his religion or the institution. Thankfully humanity is evolving and many of the barbaric rituals of the past are no longer being carried out. Among many Jews, Muslims, Africans, and Americans, however, circumcision is still prevalent. The first answer is ignorance.
Many people are unaware of the realities of circumcision.
In fact, not only is circumcision unnecessary, it is also dangerous. According to anti-circumcision advocate Frank Garcia, on any given day at least one hundred routine infant circumcisions will result in complications, irreversible surgical trauma, penile loss or even death. Meatal ulceration, or inflammation of the urinary opening happens to half of all circumcised infants. This condition does not occur to intact infants. This is because without a foreskin, the delicate glans is constantly exposed to urine, feces, and abrasive diapers.