I'm not sure how you can expect to remain friends with someone who is unwilling to accept your non-voluntary aspects.
That's not the point. Maybe you can't or won't. But perceiving them as unworthy
of your friendship...again, seems like exactly the sort of thinking that's creating a problem in the first place. Perceiving someone as unworthy because of their beliefs regarding proper sexuality very similar to perceiving them as unworthy because of their particular preferences regarding sexuality.
For example, I would say that:
"I'm sorry you don't accept me. I still like you and want to be your friend, but I understand what I am isn't compatible with your worldview and therefore you don't want to be around me. And that's unfortunate."
...is healthier thinking than:
"Oh, well if you can't accept me for who I am then obviously you're a bigot and therefore beneath me and unworthy of my time."
Perceiving someone as "unworthy" and therefore rejecting them is exactly the behavior that is at issue here. I don't think it matters so much what the precise motivation for the perception is. I would caution anyone who wants to be accepted regardless of the sexuality to refrain from rejecting people for their beliefs.