Nintendo builds their own "trophy" type system into all their games. It is called unlockables like unlocking extra characters and karts otherwise known as paid DLC to other companies. Animal Crossing: New Leaf has a badge system. In Mario Kart you try and get 3 stars on all the circuits (which helps unlocks characters, karts, etc). NSMB you try and collect all the stars which helps unlock bonus stages. Smash has trophies.
I believe it is more important for you to "brag" to others about how many points or trophies you have. Am I guilty of going for stupid achievements? Sure... I played all the civilizations in Civ 5 on Steam just to get the stupid achievement. I would have done it eventually anyways but it helped me keep track of who I've played with and who I haven't. Beat all the difficulity levels on Civ5 but I would have done that anyways. Did the same bullshit with WoW a few years back. At the end of the day I don't give a shit how many achievements I've accumulated. I just care about enjoying the game and getting the most out of it. I don't need to be told to do stupid tasks just to get some achievement.
