Quote Originally Posted by KorvinStarmast View Post
This seems a better explanation to me, since my thought of "as he aged maybe Palpatine's force lightning lost its 'oomph' and didn't have the same energy" ... but then I recalled how strong 800 year old Yoda was in the force.
But maybe this is a benefit of Light Side - you grow with time, experience and serenity. Dark Side maybe looses oomph as the user becomes older and more complacent. And frankly, Sidious has probably long since lost passion because his only goal was achieved.

- M