Maybe they don't like the taste of cum, so bareback is the preferred option? Some, allegedly, don't even clean up between bookings!
According to the (probably made up) WG in the article referenced in this post
https://www.ukpunting.com/index.php?topic=68594.msg871899#msg871899, many men have told her that if they were women they'd become a WG.
If I try to imagine myself as a woman, I'd like to think I'd want a lot of sex, I mean (a) why not and (b) in my imagination it's sodding easy for a woman to get lots of sex if she wants it (and is not too choosy).
BUT I cannot imagine having even one person depositing their alien bodily fluids in
any of my orifices, let alone multiple men per day doing it. I'd be a strictly covered oral, no CIM and no BB girl.
What would possess a woman to want to be dumped in like this?