Best reason of all is that a baby can't consent. Why force this on a child when no other voluntary and cosmetic surgery would ever be considered ethical? Perhaps religious reasons would be sufficient or an exception, but most American women's aversion is merely due to unfamiliarity. Most women with experience don't much care, and for many of us men they don't even know until well after getting close up firsthand experience. I have a snug foreskin that retracts naturally at half-mast and am long enough it can't be pulled over my head when erect if I wanted to. Until a woman sees me soft in the bright light of morning she doesn't even know. Often after even several sessions she's unaware. I've had the convo come up at that time and they've expressed a preference for cut and I've asked them why and the typical answer is appearance. They like the familiar unsurprisingly. Imagine their surprise when I drop the fact of my foreskin on them and they had no clue. I usually point out that if they didn't realize with me how many other men might have been uncut and they didn't even know? Possibly a good number. I wouldn't go under the knife as an adult for any reason, not because its special or gets me laid, but it's unnecessary and I like the protection and retained sensitivity, and the look. Longer term gf's have usually enjoyed playing with it and the sense of surprise/discovery that comes with the ultimate male exposure. Who am I to argue?
What's the difference? 
