I dont think its uncommon or common you either do it or you dont, its a personal decision. There are not a lot of doctors who do it now but they will refer you to someone who does. Your son wont be the odd one out whether he is done or not.
Just recently I have known a few older boys aged 10-13 who have had to be circumcised later in life due to problems which was obviously more traumatic for them being older than if they were babies. Learn the pros and cons and go from there.