Completely agree with Tarn. I would go further, and describe certain types of games as evil. Social games, in particular, I believe have evil game design.
Here's an interview with the somewhat controversial but always interesting game designer Jonathan Blow: http://www.pcgamer.com/2011/02/15/jonathan-blow-interview-so...
In the second half, he talks about social game design. I'm very much with him on this.