I know of 2 people who had it done, neither was for cosmetic reasons.Good point ST-One. Certainly, there are men that choose to be circumcised as adults. I actually took a friend to have his done (phimosis) and have had a few other friends do it for similar reasons or because they preferred the aesthetics of circumcision. However, I don't think that many men who were raised with one are likely to have it done later in life.
I too know someone who had it done two years ago... his boyfriend wasn't exactly thrilled about it though...