I feel the same about not being able to get my stories down on paper... what I've found that helps though is having a notebook or journal just for brainstorming. Anytime something pops into my head (a pretty sounding sentence, a plot idea, even just a few word fragments or name ideas) i write them down. No matter how stupid. For example, one of mine says "No diamond casing, no beard, no body" because the words roll really well and we were watching murder mysteries that day :) my book ideas r really similar, like "red and blues sides, enemies, red meets blue in forest, blue injured, love? red in trouble, etc." doesn't make sense but it's a start.
I hope this helps!
And of course people care! Just because not everyone does doesn't mean no one does! Keep writing :D