Whats the drawbacks on getting circised at a late age like over 20?

If it needs to be done for medical reasons then it has to be done. Otherwise leave it alone. I had to have it done when I was about 60. In the beginning I felt very naked and vulnerable. I was constantly checking if my fly was open and had the feeling that everybody was going to kick me in the nuts. It does not hurt physically but I do wish I had that flap of skin back.