Because I don't. I actually dislike playing him right now.
I used to be a hardcore raider, raiding as much as 6 days a week. Our guild constantly achieved Realm first kills and we were in top 300 guilds in the world.
At the end of MoP i retired from WoW, instead focusing on my career and social life, but recently I returned, now only as a casual player. As such, having fun while playing my character is the most important thing for me. It used to be being at the top of the progress peloton, but now it is solely about the gameplay. And I hate it.
Let me be more precise. I started hating it with the RoF nerf.
Destruction
Destruction Warlock for me was one of the most fun things in video games. Not just WoW, but all video games. It used to be so fluid, it used to have a rhythm.
I was looking forward to AoEing with my lock, not because I usually topped the meters, but because FnB is so damn cool spell to use. I loved Destro single target. I actually spent my whole MoP raiding career not using KJC, so I could not care less about losing it. MF was just perfect for lock. For mobility, you had your RoF, your Conflag and your Fel Flame. It had all the tools that made it a great spec.
But now? FnB might as well be gone from your action bars along with RoF if you are not speccing CR (and I'm not speccing this godawful talent). I'm not even aoeing in dungeons anymore. I still top the DPS on "AoE" fights, because I abuse the shit out of Havoc/SB, but I don't have fun anymore. Our single target is so boring now. It takes ages to get an ember, it feels slow and exhausting.
Don't let me start about Demonic Servitude, the worst fucking talent they could possibly come up with. I'm really not amazed by shifting quarter of my damage into 10 years old horrible looking model. I want to play my Warlock and I want him to feel powerful. I dont want to play 0,75*Warlock.
Affliction
Affliction has always been my off spec. The idea of having two specs so different and distinct gameplay-wise was always appealing to me as I could switch the specs back and forth to keep things fresh. Was I in a mood for DoT and channeling spells? There goes my Affliction spec.
Affliction is however at even a worse place than Destruction, I feel. Every shard feels So. Fucking. Precious. You almost don't want to cast that Haunt because you don't know if another Shard is coming.
About Shards. Soul Shards were intended as a mechanic that could empower your other spells. Not anymore. Now it is a Haunt-exclusive resourse. It is better to save it for Haunt, then to have that increased movement speed from SB: Teleport. It might be actually better to summon your pet, than to Soul Burn him. And Soul Swap is another FnB case. Haunt is so powerful (and SB: Haunt even more so), that spending your shards on something else feels like a step back. It feel like having a pawn in chess ready to queen and instead promoting to a knight.
As such, not only Soul Swap is useless (or better yet, too costly to use), the whole Soul Burn is too costly to use. They might as well throw it out of the window completely and just replace it with Soul Burn: Haunt. There is so much potential in this spell. So many things it could do, but it does none of it and can do none of it.
This is the worst I felt about this character. I'd rather have old Cata "Clusterfuck Destruction Warlock" back, than having been presented with so much potential only for it to be taken away.
Anyway, that is my ranty feeling about Warlock now.
What is yours. Do you have fun playing your Warlock these days?