Because it is best for everyone if public businesses serve all customers regardless of race, sexual orientation, appearance, etc. No one wants to be rejected s

Because it is best for everyone if public businesses serve all customers regardless of race, sexual orientation, appearance, etc. No one wants to be rejected service because of their sexual orientation. Just like how it was terrible that businesses in the south would not provide service to African Americans back in the day. Sure, this couple could have easily found another bakery to get their the cake. But, do we really want to allow business owners to reject service and make people from certain groups feel dejected and out of place?