Why call them sluts ??

why are the ladies in these films referred to as SLUTS and SLAGS ? Does it make men feel ( falsely ) superior ?
They are only working , doing their jobs to make a living , I am sure most of them have families
We get pleasure watching the millions of films they make so give them a bit of respect and be grateful for their input
I expect lots of comments calling me all sorts of names but I believe the above opinion is fair