Why because you like paying $15 for matinee ticket?
You like watching the Nth remake of whatever because productions costs are so high big studios are generally afraid to try things that are different?
The wonderful thing about all forms of 'fiction' where AI is concerned is that it does not have to be "correct" it is after all already fictitious. If AI can write a more entertaining book, or make a better movie, how come we should not want that?
Google indicates SAG has like 170K members world-wide. Obviously the vfx, editing, writers, directors- will pile on to those numbers but compared to the other industries this technologies are poised to disrupt, we are not talking about that many jobs here.
Frankly this could be really good for democratization of film as well. Holly Weird does not need to enjoy an out-sized cultural influence because early 20th century film need a lot light, and that required either very expensive to run very hot artificial light miserable to work under or long daylight hours with predictably fair weather - so southern CA was the spot..
I say bring on the AI Films!