Throughout the movies and the limited number of comic books I've read, I never got the impression that Palpatine drew power from hatred. He didn't seem to "hate" the Jedi or the Republic, he simply viewed them as obstacles in his way to absolute power.

In terms of suffering, Palpatine was born on a rich planet, and had an extremely prominent position in the Galactic Senate. The only real suffering I can think he suffered was that of his dis-figuration after his fight with Mace Windu, but it seems he simply wrote it off and used it as a power ploy.

Sith are said to grow more powerful using Hatred and Suffering, and as far as I could see Palpatine didn't really use either of these facets in his powers. Even in his fight with Luke, he didn't seem angry at him, more amused that some 20-something from a Desert planet was trying to kill the Emperor of the galaxy.

Are there any examples we see of Palpatine enraged or experiencing suffering and using these powers to his advantage?