Why's that? I used to mainly game on the 360 and I've never particularly found them a hindrance to my enjoyment, or thought game designs were being altered nega

Why's that? I used to mainly game on the 360 and I've never particularly found them a hindrance to my enjoyment, or thought game designs were being altered negatively for their sake - despite not being really much into getting them myself. Do you have some examples of games that have been made worse by the inclusion of achievements? Now, in game purchases, on the other hand...