Most people don't even realize the life-long problems they cause by circumcising because they are not knowledgeable about normal foreskin functions, it's basic anatomy, or its purpose in life. Without that knowledge the foreskin is seen as having no value. ALL of our sexual parts are valuable, and necessary for proper functioning during our lifetime.
Additionally, the excruciatingly painful trauma we inflict on infant boys when performing circumcision rewires their brain to be violent, and causes brain damage.
In Wounds that Time wont Heal: The Neurobiology of Child Abuse by Dr. Martin Teicher, it was found that inflicting physical abuse on babies, sets off a ripple of hormonal changes that wire the child's brain to cope with a malevolent world." Males are violent due to circumcision. It is usually boys who go to school and kill people; they are violent since their brains are wired for violence from infancy. Rarely does a girl take a gun to class and kill people.
Men have said, I want my son to look like me. If you had lost an arm, would you, for a moment, consider chopping off your childs arm so that he would look like you? Do you dye his hair, make him wear colored contact lenses, make him undergo plastic surgery, and eat what you do so that he looks like you? The fact is that unless your child is a genetic clone, he will never look like you.