Four members of our family deleted their Facebook accounts last week. And they lived!
That they lived is not surprising.
Here's the evil part: You can delete your Facebook interface to the world, it's true. However, everything you've ever posted to Facebook belongs to them forever.
They will not stop scraping your account to make $$ just because you 'deleted' it.
Facebook is infested with recent hires that came directly from the Clinton and Obongo campaigns and were getting exactly what you would expect.