10 years ago my son was two. All diapers and chasing kids around... no time for anything. When he was about six I showed up with a PS2 and a copy of lego star wars 'for the family'. Not to mention an undisclosed Star Wars Battlefront game for me (though he and I were playing two player on it before long. I told my wife 'they guys in the white are robots, so it's OK. He's not shooting people' ).
Now he's got an xbox and I play it when he's gone or in bed. I grab a used game for $10 every now and then and get obsessed with it for awhile. I find it's a good way to unwind without killing brain/liver cells.