We started using C.C. when we began to watch Chinese and Korean Soap Operas. Had to have it for that, since neither of us speaks the languages.
 
	Then I started watching British, and Australian TV shows on Prime, and found that using C.C. made it much easier to understand them.
 
	Now, It stays on for everything, but despite my Tinnitus and diminishing hearing I do like to try to hear sound and dialog. It's just the way the sound seems to be mixed on Modren Movies, with out a soundbar, the Loud's are too Loud, and the dialog is too soft.
 
	Not sure why they do it.