There were a lot of folks against mixed race marriages at one point.  Some even used the bible to justify their mislead ideas.  Where does it stop?  Its not even a true religious issue.  Making a cake for a gay couple isn't engaging in any homosexual activity.  What if a casino came and ordered a cake from him?  Do Baptist cake makers refuse to make a cake that might be served at a dance?  Its just closed minded ridiculousness. If we let stand an exclusion based on religion there is no end to where it goes.