My experience is that there is no point discussing this topic, because people who are in support of routine neonatal circumcision have strongly held beliefs that are not backed up by any science (and are actually flatly contradicted by science), and yet they will never change their minds.
The fact is that the foreskin is an entirely natural, healthy part of the male human anatomy, and it serves various useful functions. Not having a foreskin means missing out on those various useful functions. The purported benefits of circumcision are irrelevant to most men and boys. For example, not having a foreskin is only more hygienic if somebody is incapable of washing underneath his foreskin. Such cases are rare. For the vast majority of males, the penis can be washed perfectly well by retracting the foreskin during washing.
People sometimes compare male circumcision with female genital mutilation. The analogy is helpful only to a limited extent. There are many different kinds and combinations of FGM, but the most useful one to mention is removal of the clitoris. Removal of the clitoris would obviously be analogous to removal of part, or all, of the penis. A more useful analogy would be the clitoral hood. I wonder how many of those who support routine removal of the foreskin would also support routine removal of the clitoral hood. Unless you think it would be a good idea for female humans to routinely have the clitoral hood removed, I don’t see how you can justify routine removal of the foreskin.