Catholic moral teaching on homosexuality does not require there to be a God. In fact the reasoning is entirely secular. You may disagree with it, but that is th

Catholic moral teaching on homosexuality does not require there to be a God. In fact the reasoning is entirely secular. You may disagree with it, but that is the case. Catholic moral teaching on slavery is based on there being a God. When it comes to marriage, the church believes that relations between men and women that can result in the generation of a child are worthy of special privileges. Relations between impotent men or women who cannot have sex are similarly not considered marriage. If you can find two men or two women who produced a child, the church would change its beliefs, but no one has been able to do so. Note that there's no dependence on their being a god for this one. The fact that heterosexual couplings produce children is an observation. That this relationship should come with societal privilege is a statement one can come to through reason.