Planes don't really fall out of the sky either, especially modern commercial jets with high L/D ratios. There are some exceptions, e.g. fighter jets, but generally planes can glide down safely upon engine failure provided there is a nearby spot to land.
We're talking general aviation here. Small private planes crash frequently.
I live around Albany, NY. In the past 18 months, there have been at least 4 fatal crashes that I can recall as a casual newspaper reader. Usually it's related to tired/inexperienced pilots combined with some other factor (mechanical, weather, etc).
One that I remember as a kid growing up in farm country was a guy who had an engine failure. Like you said, he didn't just fall out of the sky... he tried to glide into a field, and just missed it. Wing clipped a tree.
http://en.wikipedia.org/wiki/Lift-to-drag_ratio http://en.wikipedia.org/wiki/Lift-to-drag_ratio