This is just one of those personal subjects for which there will never be a definitive answer.
Many of us who were circumcised as babies are absolutely, perfectly happy being that.
There are those who resent their parents for making the decision to circumcise without consulting them. This is wasted resentment. Others who are not circumcised would like to be for whatever reasons. Some think the hood is terrific, and that is terrific for them.
It is still done today because parents have the option to do it or not. Apparently a lot of parents in the US feel it is appropriate for their personal reasons, whatever they are.