Where should there be "The right to refuse service"?

Well sad day for you cause it is normal. Just about every social mammal species has roughly 10% gays so its normal.

Well Muslims would say its a sin if a woman does not wear a burka, so should there be a law that mandates all women to wear burkas. No thats why successful countries have separation of religion and state. So laws are written on what society needs not what religion dictates. And one of the things society needs is a free market, excluding 10% of the population from that market is not a free market.