Excellent question, I start with my own experience and its possible psychological effects. Being from Spain, circumcision or phimosis surgery is very rare here.
My parents tried to explain to me as best they could what they were going to do to me. More like any child, he did not understand its effects or consequences. Being the only one circumcised out of my entire family and close friends, it was easy for me to realize that I had to be different from everyone else.
Sometimes I wondered if there was no other option, especially when I felt like the odd one out on the beach. Or when I had problems with stenosis due to the effects of circumcision.
Here in Spain it is assumed that someone who is circumcised is either Jewish or Muslim, and mockery is often present. Luckily we moved to the USA for a while where I could feel less weird, and where I managed to understand more about the subject.
Already in adolescence it was another extra, where being aware that I was different I was afraid of being judged by girls.
To this day, it is a topic that interests me a lot. And I still have doubts about whether the operation could really have been avoided.