death, life is only special because it ends, if you were to live forever imagine it, all loved ones growing old and dying, years of boredom (then probably world domination). Then when the universe goes down the c$%##er you will still be left. Also, even though i dont want to, saving Timmy and all the others would seem better. As long as they don't go "I AM LEGEND" on everyone.
But seriously, Immortality only if i could end it when i choose. Hasnt anyone seen Ninja Turtles the movie, "Immortality is a curse my brothers"