Why am I like this?

I'm at a crossroads here. I'm bisexual and I seem to be leaning towards men more and more everyday. I don't want men to be my only option, I want to feel attracted to women too. It feels just off for me when I masturbate to men, even though I enjoy every second of it. I think part of it is me not wanting to be the stereotypical flamboyant gay guy with that annoying voice and having no masculine qualities to him whatsoever. Now I'm a little worried that people will just call me a homophobe or say that I have internal homophobia (wtf?), but it's something that's been nagging at me for a while and I just want to be rid of it.