IDK I always thought if you're bisexual, all things being equal why not go with what society expects. It's like I like girls and guys equally, but if I choose a same sex partner, I'll be discriminated against, family and friends might turn there back on me, and being with a same sex partner will also complicate starting a family of our owm. Not to mention our kids will probably also be discriminated against. But if I choose a partner, of the opposite sex, it will be pretty much mean smooth saling through calm social seas. Plus starting our own family is easy as the the birds and the bees. Barring any medical issues of course.
I know matters of the heart are never that logical and down to earth. And there are many people who actually like challenging social norms. But on some level you have to wonder if that kind of reasoning at least contributes to bisexuals bad reputation.
This is very interesting, I am a lesbian myself, dated some bi girls, some pan, etc, and I always thought they just leaned in more for the "easier" option, which is to date a man, which is actually also easy because it's hard to tell with girls if they like you, if they just like your hair, if they aren't pretty clear about their intentions.
And then there are people who want to have f amily, which I don't, adopted , donor, none of that. So, in my case, it's not biphobia, but you gotta ask the person about being in the closet, how much she cares for social norms, a possible family, etc, etc, etc.