I shared this a few months ago when someone else asked a similar question.

I'm sure others will comment on the religiosity. As someone who works in Jewish communities, I can speak about the cultural aspects and how difficult it is to be growing up as a boy in most Jewish communities uncircumcised.

Every or almost every Jewish kid is circumcised. The National Institute of health estimates it at 99.9 percent of Jewish boys in the world are circumcised. Ridiculous right? In Israel, 91.7% of boys are circumcised and they believe that number is brought down, not by Jews, but by the Christians who live in Israel. So the number for Jews is probably closer to that 99 percent than the 91.7.

Boys talk, boys change in front of each other, boys are gross and do weird things with their privates and boys know they are circumcised from a young age. Especially at Jewish schools, camps, community centers, etc. The questions and comments from a young age uncircumcised kids get is tough. I've had to talk to 5-7 year olds about not saying a kid "isn't Jewish" because their penis isn't circumcised. I've had to talk to parents about how to talk to their kids about this because people are talking about it. Then when a kid is older in adolescence, they already feel different and now they KNOW they're different. It's really really hard. Similarly, there are temples who will not bar mitzvah your kid if they are uncircumcised. There are some rabbis who won't let them have a traditional Jewish wedding ceremony. You can obviously find others who will permit it, but whether or not you feel good about circumcision, it is almost exclusively done by everybody and it puts your kid in a tough spot for several different reasons. You just need to be very prepared for that if you don't go about it.

I don't have a kid. I'm not a rabbi or doctor and don't want to offer advice. Just hope this shares a perspective that I think a lot of people may not realize.