(Language Warning for the Vid) http://www.youtube.com/watch?v=Aip2aIt0ROM
I think that Egoraptor puts it better than I can. Addictive games are like a snack food, while other games are like a fine dessert.
Snack foods you eat more and more of because of their addictive nature, sometimes even when you don't want any more. Whereas a fine dessert you take your time and enjoy it, and it's satisfying in the end.
It seems like a lot of games are going for the addictive nature though. This was my problem with games like InFAMOUS, and even Nier. They're fun to play, but there were times when it felt like it was dragging on, and that I was doing the same thing over and over.
Then you have a game like Demon's Souls - while it has some of the elements that the recent Castlevania games have - leveling up and so forth - the levels were carefully designed.
I'm sure it's less expensive to have a bunch of mobs with open world AIs randomly thrown into a premade setpiece, but I feel like there needs to be more games that are hand-crafted for challenge and excitement.
We need fewer addictive games, and more satisfying games.