Board Thread:Theories and Rumors/@comment-32364859-20170710050027/@comment-26537965-20170711095234

Energy Ninja wrote: The reason that the FSM, Wu, and Garmadon lived for as long as they did (in my opinion) is because they still needed to live. The FSM needed to defeat the overlord, Wu needed to train the ninja before Lloyd was prepared to take his job, and Garmadon needed to help train his son until he couldn't any longer.

No, the reason is because of their elemental powers.