One of the arguments for circumcision is cleanliness, but as you mentioned, about ten seconds with soap and water is all it takes.
I'm sure if there are men who think having a dirty dick makes them a man, there are also men and women who might like to have sex with him.
Parents have a responsibility to teach their sons about this simple hygienic habit. It's not that difficult to clean a cut or uncut penis.
https://medium.com/beingwell/circumcision-if-its-not-your-body-should-it-be-your-choice-da0791bbf850