Next up, Jewish and Muslim restaurants that refuse to serve pork, and Mosques and churches that refuse to do gay weddings. Or the Christian or Muslim convenience store that refuses to sell alcoholic beverages. How far are litigious people willing to push this type of thing. Just get the damn cake somewhere else.
That is such a ludicrous "slippery slope" fallacy that you just articulated there. What a load.
Restaurants are aloud to serve whatever they want, as long as they don't discriminate as to who they serve to, so your pork example has absolutely nothing to do with the case at hand. If they refused to serve food to homosexual couples, then that would be similar.
Churches are not a public accommodation under the Civil Rights Act, so they have nothing to do with the case at hand. Nothing but a strawman there.
Convenience stores are required to sell any products that they don't want to. There are literally thousands upon thousands of convenience stores that don't sell alcohol. And, as long as they don't discriminate as to who they sell to, that situation has absolutely nothing to do with the case at hand.
We have to send a message to religious business owners that they cannot break the law and discriminate as to who they sell their goods to based on their own personal, subjective beliefs. Their religion does not put them above the law. And, selling a cake is not violating their beliefs anyways. If they allowed them to do so, that would be the real slippery slope. If you can refuse to sell products to people based on their sexual orientation, why wouldn't they be able to do the same based on skin color, religion, etc.? According to the law there is nothing negative or "sinful" about homosexuality. All business owners must accept this or risk losing their businesses.