There was a time when I regularly put effort into earning a card back in Hearthstone. When I started trying to collect card backs, I was having fun with the experience. Eventually, things stopped being fun. The game got frustrating and I lost interest in trying to earn card backs.
Once in a while, I return to Hearthstone and attempt to earn another card back.
The best thing about the card backs is the awesome artwork. This blog features all of the card backs that I have earned.