Why do people become addicted to video games

Because if it is fun to them they become more addicted to it.So then they are wanting to complete the game and just like me i have 10 games and already completed 3 of them and I'm addicted to Pokemon on ds so here is a way to solve it
You play atleast one level (if it does) then after that cut of the Game System but save First then you Read a Book or anything else besides a game for 2 hours then play another level of the game you where playing then read or do something besides playing that game system for another 2 hours then repeat this over and over for each game you have