I'm bi... have no problem talking about it/ no issues. I haven't told my immediate family because, although i don't feel that they would judge me, i don't really feel the need to tell them. If I was dating a woman and things were becoming more serious I would tell them about it but i might still not necessarily come out to them. I know they'd love and support me regardless so i guess i just see it as a non-issue.
I have mostly dated men in the past but recently dated a cute transman. I find that people presume I'm straight (this even happened to me in a gay club recently).