I'm not sure you're asking the question you mean to ask, which is why it's not a good one. Not to put words in you're mouth, but maybe you're wanting to ask "What, if anything, about reading others' work motivates you to work on you're own?" or possibly "Do you find yourself thinking about how you'd write the story you read?"
I try to study others' books as I read them. I'll pick up a best seller and as I read through it try and figure out why it's a best seller, and then I apply that to my own writing (if appropriate). Or, if I hear about a book that is popular, but for the wrong reasons (aka a lot of people bought it but they don't like it) I do the same thing - I try to figure out why it's not working. What I dont like is when I'm reading something I'm really not enjoying but I didn't pick it up to study. Then I annoy myself trying not to ready for the red pen. Then I want to work on my own stuff because I'm sitting there thinking, "If this can get published, surely mine can"
However, I still have those books that I really enjoy. While its hard to put them down sometimes, they also inspire me to work on my own stuff. I want to be able to provide readers with the same enjoyment that I'm getting out of reading this wonderful book.
But I have to agree with Quick Lime; I can enjoy others' stories because I know that there's many (many many many many x 1000) stories that are <u> at least </u> as good as mine and many more that are 1000 times better. If you're not finding these and reading them, you're not learning anything about your craft. If you're not finding these, either you need to really step back and take a critical look at your stuff, or you need to get some book recommendations (I believe there's a library here on AW...).
Personally, I am a chronic reader of Janet (Stephanie Plum series), Nevada Barr (Anna Pigeon series), Vince Flynn (Mitch Rapp series) and Patricia Briggs (Mercedes Thompson series)