Obviously, I hate it. It would piss me off to no end to be required to provide professional services to someone I found morally repugnant. (In my case, the federal government, rather than gays, but the principle remains the same to me.)

And yeah, I'm aware of such laws. I think they are unethical except insofar as they apply to government services. Yes, that means I think it is ethically acceptable to open a restaurant and disallow blacks from dining there, though I feel it's immoral to do so, and would not patronise such an establishment myself. An ugly consequence of defence of private property and freedom of association, unfortunately. Hey, more diners for my "Anyone except bigoted assholes can eat here" cafeteria, no?