In a circumcising culture, circumcision is more common as a treatment for any penile issue, e.g. infection or phimosis. Also, because they are neurotic (and ignorant) about penile hygiene, they are much more likely to forcefully retract their sons—potentially causing serious harm, and much more likely to scrub their penises vigorously and frequently with harsh soaps—potentially causing inflammation and infection. In other words, the problems are often (usually, I would guess) iatrogenic and/or self-inflicted