Being vaguely familiar with it and also uncircumcised, let me chime in:
Firstly, there are no medical drawbacks to being circumcised or not circumcised. There are, however, 'fun' drawbacks to being circumcised with some ridiculously high number of nerve endings in the foreskin making intercourse all the more fun. And whacking off too, to be blunt.
On the appearance thing, typically, when girls are in a position to see your penis, you're not likely to be flaccid, and thus it's not going to be apparent that you've been circumcised. You catch me drift?
The only medical reason to be circumcised was to reduce the chance of bacteria growing inside the foreskin, which is easily avoid by cleaning it in the shower, which most guys do anyway, so the only reason nowadays is religious, and they're not real good reasons to mutilate a child's genital organs.