Being a bisexual woman myself(yes, I just labels myself), I can honestly say that my tastes may vary month to month, week to week, and day to day. Sometimes I desire men or women more. This could be determined with a number of varying factors, or just what I fancy that day.

If you have heard of the Kinsey scale(look it up if you haven't already), it shows variations of sexual orientation. You can be bisexual and like to have sex with one gender or the other but nor really like them very much. Yes, even women can have a great sexual time with a gender that they have little respect for, as may be the case with some bisexuals.

If you are straight, can you make yourself perform homosexaul acts? For those of you who are straight, think about it the other way around as lesbians would be to having sex with a man. It would not be a pleasant experience at all. If there are lesbians out there having sex with men, they are either constantly damaging themselves mentally by having sex they do not want or are closet bisexuals

There have been times I have thought of staying on one side of the fence or the other due to the way I was treated, felt, fantasized, ect but in the end, I'm not a lesbian or straight. No matter how much I wanted to be at one time, I still loved sex with men and women. I  thought about it often enough to make me realize that gay people don't entertain the thought of having sex with the other gender than heterosexuals entertain the thought of having sex with the same gender. Since so many people do fall in the middle wither they admit to it or not, gives you something to think about.

I have found that most women that say they are Bi are really straight and trying to please a boyfriend/husband, exploring thier sexuality, doing a love scene for money, or a double with another gal for money.

Another factor may be just plain annoyance, day in and day out the dancers and escorts are pleasing others, not exactly seeing people pn theier best behavior and having to say "NO" all the time to unsafe acts or things that are over the limits they are comfortable with. Without sufficient breaks one can tend to harden or get a little bitter. The claim to hate men will come up but its not really that they hate men, they are just tired and need a break from the biz. Its called burn-out. I've seen that alot as well and the gal(or guy) just keeps on working because of the money. Its not easy to say,"no, I need a break"
Its easier to say," ugh, I hate this but I need to make X amount today, this week, or this month" This wears on a performer, dancer, escort, whatever sex-work the gal does.

Ok, I'm babbling and I'll stop but in my experience, I have met way more truly bisexual women in this business than either straight or lesbian women.