What games did you enjoy playing?.
Oh i just noticed you mentioned these, doh! @ meI stopped playing warcraft in january this year and I played black ops on xbox 360 those are the last times iI felt the buzz of gaming.
Buying lots of games at once doesn't help with this, you tend to find you don't enjoy any of them as much.
The OP's problem is that he played World of Warcraft.
Nothing can really top that game in terms of what it 'gives' back to you, so everything feels stale by comparison. It affects quite a lot of people actually, I'm somewhat the same myself. I find I'm gravitating towards PC games that offer some sort of personal character development. It has to feel like it has good gameplay, and that you'd always feel some sort of positive feedback... hardly any of those games in the OP do.
Buying lots of games at once doesn't help with this, you tend to find you don't enjoy any of them as much.