That's why we planted a tree in the game.

Isn't that true of all games, and even for comments on this website? Sorry if I am just missing the sarcasm.

Are you the kind of guy that says that all things that serve no purpose except for entertainment should be banned?

I am of the opposite school. I think practical things are fine and dandy, but the things that make us human, make life worth living, are all "useless".