Chocolate Bark, and it's evil holiday incarnation Peppermint Chocolate Bark, is the invention of enterprising candymakers who simply need a way to use up their scrap chocolate and still charge $26.50/lb for it. Chocolate bark is, after all, just flat rectangles of chocolate that've been melted, spread out on sheets to harden, and cut into jagged pieces. Often the bark also includes sea salt smoked almonds or broken shards of candy canes that they had lying around (in which case they can jack the fee to $31.50/lb).
Then the slices are shoved into brightly colored tins and tossed onto the shelves by the check-out counters at Williams-Sonoma, Sees Candy, or Restoration Hardware (that name is such a misnomer, by the way) and hordes of thoughtless aunts and uncles buy them and give them to people like you. Then you eat a quarter of one, put it in the cupboard and throw it all out six months later.
Now, wouldn't you rather have a Jelly Bean Portrait of Elvis Presley? Who wouldn't, am I right? Huh!?