OP, do you even know what the procedure involves?: "Surgical removal of the foreskin involves immobilizing the baby by strapping him face-up onto a molded plastic board. In one common method, the doctor then inserts a metal instrument under the foreskin to forcibly separate it from the glans, slits the foreskin, and inserts a circumcision device. The foreskin is crushed and then cut off. The amount of skin removed in a typical infant circumcision is the equivalent of 15 square inches in an adult male."
Newborn circumcision is a cosmetic procedure. Unless there is a medical reason, it is unnecessary. It is an irreversible procedure performed on newborn babies, fresh from the womb, without aesthetic, and without their consent. You can say that it is in no way similar to FGM all you like, but they are essentially the same: a cosmetic procedure for traditions' sake.
I do not care if you want to cut off your own foreskin, in the same way that I do not care if you want a tattoo or body piercings. They are all cosmetic decisions that you are free to make FOR YOURSELF.
But I refuse to not feel strongly when you say you want to cut off your son's foreskin without consulting him, in the same way that I would be vocally against you tattooing, or piercing your son without consulting him.
You are an adult, and as such you are free to make your own decisions regarding your own body. You should not be free to make the same decisions regarding a defenceless infant, who depends upon you for love and support.
I'm sorry if you think this makes me "not cosmopolitan". I will take that label and own it, if it makes just one person rethink their decision to take a knife to one of the most sensitive areas of a less-than-month-old baby's body, removing the foreskin from his penis, which will then be contained in the same nappy as his excrement.