Garret Murray, developer of the Ego app for iPhone, on what he calls “revenge reviews”: Reviews posted to the App Store by users who accidentally purchased an app, misread it’s description, or otherwise made a mistake. I hadn’t thought of this:

People brought up a great point the last time I complained about App Store customers—they’re all children. Not metaphorically, but literally. Most of these customers are kids with iPod Touches. So of course they act like children.

But it rings true. I’d go further and say that the ones that are not literally children, are probably emotionally stunted in some way.