I am human, and as such, I like being praised by my peers.
So yes, I get upset, and want to pull unreviewed stories. Not just here, but anywhere I post online. I would rather be told that there is somethign wrong with my story, then have nothing said at all. Especially when I have over like, 400 hits and 0 reviews, because then I have to think 'is everyone reading a few paragraphs, hating it, and running away?'
I prefer concrit and semi-literate reviews over netspeak and one liners, but anything is better then nothing.
Not to say that I am the best example of a reviewer, I admit to reading something, loving it, and not reviewing, for any number of reasons that, like someone befor eme said, are just excuses. I try to leave atleast one reveiw on the newest chapter or a WIP and one at the end of a Completed fiction, though, especially on less reviewed pieces