Imagine your Mom and Dad are going to live in diferent houses and you have 2 choices:
(Good)
Chose Mom so it doesent Ground you repeatly, but dont buy many games for PS3,XBOX,or PC.
(Evil)
Chose Dad so it Grounds you repeatly, but let you buy any game in a certain prize.
Evil for Dad is that it gives you a benefit for you, and if you get grounded as some kids say when they are: "Charlie Operation" means that play in secret when grounded.
Good for Mom because it doesent grounds you repetly, but, dont buy many games, or even go to see a game you like. And you are whit her more time outside in usual Mom likes, such as go to buy, etc.