Why would anyone join an obviously Christian association, and then complain that the views expressed are morally Christian
Which version of Christianity? You guys can't even get your own story straight between yourselves,,,, or are you saying that Christian Scientists, Roman Catholics and Baptists all have the same views?
I wouldn't join an association of witches and expect them not to run around a cauldron, wearing pointy hats, and with a broom sticking up between their legs.
Good thing too, since they don't do that. You really need to find a better research source than children's fairy tales.
Anyway! How come witches marry the devil instead of each other?
They don't. I think you're confusing Wiccans (witches) with Satanists. I'm not even sure that Satanists 'marry' the devil.
They must not believe in gay marriage either.
Who? The Wiccans or the Satanists? Or the Christians? After all, how come the Christians marry each other all the time instead of their god,,, I guess, by your own logic, the Christians must believe in gay marriage after all.