To keep in touch with my out of state friends and the addiction of upgrading my loot and getting new items. Also the game makes me think. Like who was the idiot at Bungie who originally thought it was a good idea to buff Thorn? Should I go to his desk and write "Nerf Thorn" all over his computers, screens, and consoles with permanent marker? Give him a box that explodes full of glitter when he opens it? Should I put 100 signs outside his home that say "Nerf Thorn?" These are serious questions that any insane Destiny person should be asking himself :p