To me, I agree, but I've heard some of them draw a distinction I don't fully understand and I try to be respectful of identifying people in the way they choose to be identified.

I'm not sure what that distinction might be, and I doubt it would be real anyway. Basically the idea is that everything should be voluntary, which is really hard to disagree with whilst being sane.

Not with their definition of 'voluntary.'

This is their definition of 'voluntary': http://dictionary.reference.com/browse/voluntary

done, made, brought about, undertaken, etc., of one's own accord or by free choice

- Coincidentally, it's also yours.