There is; the seme in this one has a really positive perspective on the job: http://www.mangago.zone/read-manga/calling_ootsuki_miu/
I hang out with a cam girl that works in porn conventions from time to time, and she absolutely loves it; she hates it when people asume she's doing it for some sad twisted reason when she just loves sex and meeting people. I totally agree with you.
http://www.mangago.zone/read-manga/ikenai_otoko/ This one is also great from this aspect! (Once you get over the second hand embarrassment from the first chapter :DD )
I don’t think I ever can, the second hand is strong with this one.
Whenever I re-read it I have to skip the first chapter (≧∀≦) It really gets better with the numbers if you ever feel like getting back to it (≧∀≦)
The thing I don’t like about manga that have to do with the porn industry they usually make it so sad, but there are pornstars out there that actually enjoy their jobs. I wanna see that perspective a little more.