Hmmm....I guess you're right.
Foreskin provides...."gliding motion" during intercourse, extra skin for big, hard erections, protection of the glans from irritants, secretion of antibiotics to protect the penis from disease, emollients to keep glans moist and supple, and pheromones to attract mates. It provides sexual pleasure so that a being wants to procreate, and do it often. It even have estrogen receptors...doctors don't even know WHAT they're for, as well as testosterone producing glands (I have a feeling it has something to do with male-female bonding-- one needing what the other's body produces).
Legs provide...um, walking...
Nope. No comparison.
Seriously, men, stop thinking it's a useless flap of skin! You don't know how important it is! Until we stop letting them brainwash us into thinking our sex organ is mostly useless, they're going to keep butchering us and our male children.