The primary purpose of any game, regardless of it's use should always be to have fun. Gamification is a whole thing that would continue to move forward but even then any good game has to be fun before it's anything else or it doesn't work. Personally, I think that seeing people enjoying themselves is generally a pretty entertaining experience all all by itself. Seeing someone do something that they really enjoy, even if I don't enjoy what they're doing just tends to bring a smile to my face. It's in this spirit, that I really enjoy watching Clueless Gamer by Conan O'Brien.