Should businesses be able to deny service to gays based on religion?

So I’m for gay rights, I don’t care if they marry. But should we force religious businesses and pastors to accept this and serve gays when it’s marriage related? There has been cases such as wedding baker denying gays a cake, a wedding photographer denying service to take photos of a gay wedding, etc.

Of course I don’t like it. But where does the line end? A baker once denied services to someone who wanted a hateful phrase towards gays put on a cake.

Thoughts?