I know why...
1) because everyday I watch more people killed in the news and the human rights only protect the perpetrators
2) because corruption in my country (Brazil) is epidemic, and we pay one of the worst taxes in the world
3) cause people don't know how to vote
4) and they play funk by my window at 3am
5) and I can't find friends to play some casual RPG
6) neither do I go to the gym for more than 2 weeks, I don't talk to people there, I don't want to be around anyone
7) and then I get lazy
8) and then I eat
9) and then my colesterol goes berzerk
10) and when I'm at work, some rich dude put 150$ thousand dollars to develop something I was doing in my free time and is already making half a million in the market when I give up my project for another one...
11) ... and see it happening again
12) and if I want my 8 dollars Netflix to play more than 20 movies I have to crack an IP to access as an american, because I pay the same here but receive only bananas
13) and Sony-Brazil sold me a Netflix ready TV that cannot access Netflix from Brazil, even thou I'm a paid Netflix member, just because some moron at Sony-Brazil forgot to enable the Netflix App (bug reported, they will fix it until... 2015)
14) and comes soccer season again and nobody cares that some convict left prison on a "Christmas-jail-free-crap" and killed 2 mothers before getting arrested again, and this pisses me of so much I can hardly describe
15) and so on until I "run out of numbers"

my real question is... with that much anger, hate.. that I can only suppose comes form a feeling of powerlessness (is that a word?), how can i prevent myself from turning to the dark side, throwing it all to hell and just stepping on other peoples heads to move up in life, hurting feelings to get laid and all the other gruesome things I'd love to do at the top of an unhealthy sadism?

I heard the darkside has cupcakes and free beer...

And then to avoid becoming this, I just sit around at home, doing nothing, wanting but not wanting to have people in my life.