If you want to go the teeth route, removing the molars or canines is a better comparison. There are medical reasons why this might be necessary, but to rip out a baby's teeth that have yet to grow in with a pair of pliers for ritualistic reasons is not the same thing at all.

Circumcision destroys nerve endings and can cause permanent scarring, potentially dramatically reducing the ability to feel sensations. The head of the penis is also a mucus membrane and the foreskin is meant to both keep it moist and protect it from damage. Have you ever had dry eyes or the inside of your nose dry out? Imagine cutting off the outside of your nostrils or part of your eyelids so that it was like that all the time.

If somebody wants to have it done, that's fine. That's their choice to make, just like getting a tattoo or piercings is. But forcing it on somebody without it being strictly necessary for medical reasons is cruel. It can be very traumatic. If it wasn't, "foreskin restoration" - the act of using clamps, pulleys, and rubber bands to stretch the skin of the penis out into a fake foreskin - wouldn't be a thing.