you have nothing to apologise for, B00, people do judge by appearances, that's what being judgmental is all about. That's why people have always dressed to impress: to give members of the opposite sex (or would-be bosses or talent scouts or whatever) a reason to want to know you better, considering there are millions of other fish in the sea. If someone wants to dress like a slob, you've every right to assume he is one and pass on to the next person. It's nothing to do with bigotry and everything to do with not wasting your time.
In this case, it seems looking like a slob has been no barrier - possibly because he attracts other slobs, I don't know.