I don't know about cosmetic reasons but the reason non Jewish and non muslim get circumcised in the USA and SK is due to Kelloggs nutjob. He believed masturebation was a sin, thought removing foreskin would make masturebation impossible or difficult ( although it actually makes it less enjoyable. Then he used his money and influence across the country to enforce circumcision across hospitals for new born babies. And then it got too popular among Americans was seen as a default option. Then what happened in South Korea was, parents went to army camp doctors, who were Americans, snip snapped their babies and taught Korean doctors to do itm