To be admitted to Nature's hearth costs nothing. None is excluded but excludes himself. You have only to push aside the curtain.
I do not believe that defending traditional marriage between one man and one woman excludes anybody or usurps anybody's civil rights and denies anybody their civil rights.
The orthodox Jewish faith practically excludes woman from religious life.
One of the big questions in the climate change debate: Are humans any smarter than frogs in a pot? If you put a frog in a pot and slowly turn up the heat it won't jump out. Instead it will enjoy the nice warm bath until it is cooked to death. We humans seem to be doing pretty much the same thing.