Why are we talking about Heaven so much?

We recently discussed the story of 6-year-old Alex Malarkey, a boy who, after narrowly surviving a car accident that left him a quadriplegic, became the center of a media storm when his father Kevinpublished a bestseller detailing Alex's experiences "visiting Heaven" right after teh tragic accident. Although the book became a New York Times bestseller, Alex would later retract many of the claims he made in the novel.

What is it about finding and visiting Heaven -- while living to tell the story -- that makes the notion so attractive to publishers and readers alike?