A: Not necessarily. Some are, some aren't. Some say they're attracted to men and women in different ways, others say gender just isn't relevant to who they're interested in.
A: Most Bisexuals will probably say that when they're interested in someone, they're interested in them 100%.
A: No. It's well recognized in medical and psychological circles that bisexuality is a very real and genuine sexuality. But anyway, there are plenty of Bisexuals around who can tell you that.
A: No more than being heterosexual or homosexual is.
A: Maybe for some people. Some lesbians or gay men "come out" as Bisexual first, but most Bisexuals remain bisexual for the rest of their lives.
A: Don't make the mistake of assuming there are only 2 options to choose from. Bisexuality is an option in its own right. A lack of information about Bisexuality is probably the cause of most confusion a bisexual might feel.
A: Not quite - Freud thought we were all born Bisexual, and may develop a preference later in life. No one is really quite sure about this, but most people have had at least some feeling for both genders at some stage in their lives.
A: Strictly speaking, maybe. But what you call yourself is up to you. Some may feel the attraction they feel for one gender isn't enough to call themselves Bisexual. Some people have other reasons for not identifying as Bisexual, as well.
A: Some people may want to feel "normal" and think of themselves as heterosexual. Others for political or social reasons may wish to identify with the Lesbian & Gay communities.
A: That's a hot issue for some people. Some people think so, but there are plenty (bisexual and otherwise) who disagree. Lesbians fought for the right to be explicitly named, because they felt invisible. That battle is still going on for Bisexuals.
A: Well, no-one walks around with "Bisexual" stamped on their foreheads. It's very easy to miss them. If you see 2 people of the same gender kissing, you don't think to ask if they might be bisexual. And they might be. Similarly, if you see a man and a woman kissing, either of them might be bisexual, too.
A: Bisexuals have been targeted as scapegoats by people who think of AIDS as being a "Gay disease." Bisexuals are thought to be a "bridge" group between the heterosexual and homosexual communities.