No - they do it as a job. They're just working, checking angles, dealing with lighting issues, etc.
I mean - even the actors don't get turned on. They just pretend.
You didn't imagine that they enjoyed it, did you?
Porn is just bad actors, pretending (unconvincingly) to enjoy exaggerated, unrealistic, perverted sex.
And it's watched by gullible, desperate, sad losers.