In your opinion, is it worth getting into the TV/movies writing niche for money?
I feel like it can be worth it to get into writing TV/movies for the money, depending on your personality type. If you naturally lean towards more creative endeavors anyways, then it can represent a melding of talents and interests.
However, if your writing preferences lean more towards strong copy and non fiction pursuits, then writing TV and film could easily be draining. I think like most things in this industry, the answer will be different depending on whether or not the writer already leaned towards highly creative projects to begin with.