Why do people hack?

I think it depends on the game. Pay to win games (or games that need constant grinding to actually win / progress like GTA V) I think people cheat (my self included) so that you aren't needing to pay rockstar for in game cash so you can get all the car's and houses just for fun instead of grinding for money, which gets very boring.

On the other hand, games like CS:GO and PUBG people cheat either to piss others off, or that they are jealous of the people who are good. Skill based games like those I don't really agree with cheating in since you can't gain anything to help you in it (skins don't help ) and it is just cheating to kill others and ruin their fun .