The question we are voting on, "Should guesthouse owners be allowed to refuse gay couples?" is a special case of what should be a general right. Anyone who runs a business attached to their home should be allowed to refuse anyone whose custom might impact that home, for whatever reason. For instance, if a "gay" couple owning a guesthouse feel that a prospective guest might be "homophobic", they should be allowed to refuse that guest. Indeed, they should have the right to accommodate only "gays", if that is what they wish.