why do people hack?

When it comes to cheaters (remember cheater is someone who is using additional software to gain an advantage over other players, hacker... just look at anonymous )

They do it for a few reasons
- they are bad in the game and they want to play better without spending the time to get a true skill. Even few cheating software are using this as their slogan (why waste time on training if you can be better than pros with our cheat).
- trolls, they just want to make you mad, it gives them that feeling that they achieved something by ruining your game
- emotional issues
- they are just kids and they want to be "cool"