Okay, let’s be clear: circumcision was the symbol with alliance with God. This is in all holy books.

After Jesus, the alliance changed, not requiring it anymore.

Apart from that, there are reasons on why circumcision could be “healthy”. I’ve read about it a while ago, they kinda made sense (especially if a man has premature ejaculation and/or very high sensitivity). I’m not circumcised, so I’m not sure if the benefits are real.

But, to answer your friend, I would be like: man, I don’t know. Never thought about it.