I’m not sure if you’re using the general “you” or the specific “you” so I just want to clarify that I am bisexual and not at all repulsed by LGBT people.

You make a good argument in your last paragraph. Photography is a more difficult situation to judge than the cake thing, but I feel like the photographer is often such an integral part of the wedding, that it’s more of a participatory service, and my argument is about not making people participate in something they find unsavory.