I don't understand this at all. Business owners already have the right to refuse service and (as far as I know) they don't have to give a really stupid fucking reason for it either. Setting up an exclusionary law for this behaviour practically ensures that they'll be held up to the world for their ignorance and prejudice. Never mind the fact that they are fighting a losing battle against progress: you cannot exclude a segment of the population and call yourselves "free". I fail to see how a person's inalienable rights can be open to adjustment in this way.

Besides, gay people buy things. A lot of things. You're in business to make money, not flaunt your personal opinions. Some 'adult' people need to grow the hell up...