You could do that, it would be quite pointless and you can't make them serve only the drinks and music you like. Also, this is a horrible analogy to the gay marriage issue. I have never met a gay person who claims that a heterosexual lifestyle is invalid and they also aren't forcing you to do a damn thing. If you don't want to get gay married, nobody is going to make you. It's not mandatory and heterosexual marriage is not going away.