Non-discrimination is not a human right. Non-aggression is. But you should be able to say no to someone demanding your services for any reason you want whatsoever. I am aware the current laws don't totally reflect that and actually allow certain groups to force services from others. But I'm saying when you get deeper into the logic and philosophy behind it, it is wrong to - by threat of force - force anyone to provide a service for someone else on any basis of any kind. You simply should not be able to force a service or good from someone that does not want to provide it. They do not need a reason.