Literally every single deck I play falls in this category. I only play decks I enjoy playing, I completely avoid playing decks whose gameplan doesn't satisfy me, even if that means I don't have as much success with the decks, I still enjoy playing. For me, a victory with a deck I enjoy playing is worth 100 wins with a deck I don't enjoy. Quality over Quantity. (Obviously this is bad for a game like Hearthstone which promotes quantity over quality)
Zoolock, Feign Death Hunter, Dragon Paladin, Bubble Paladin - all of this in wild. I don't play too much of Standard, but I really like DK Miracle Rogue and DK Evolve Shaman. Generally, I don't care too much if I lose - I hate losing to certain decks, not losing per se. That's why I mentioned almost all of my favorite decks.
/* a bit off topic, but I really like pretty much all the new DK cards and the flavor they give, I just don't have them aside from Valeera and Thrall, otherwise Elemental Mage, Control Paladin, Control Warlock and any form of DK Hunter would be up there */
DK Hunter decks, any deck with Prince Keleseth (trying to make a viable deck for each class with him is an interesting challenge), and I always enjoy trying to play the worst class in any given meta for the additional challenge.
And here is a deck with all those requirements. ;)
Currently loving both of these. The paladin once has a better winrate and climbs a little faster since games are generally much shorter, but mage is also a lot of fun to just grind people to death with a board of lifesteal water elementals and multiple 10/10 pyros. Been 9 turns into fatigue before and still at 30hp lol