For me, I come with the view that in real-life, a lot of people take the view Luke Skywalker did that they hate the Empire but the problems of it are things which are very far away. Luke might have wanted to jump ship and join the Rebellion after the Academy but it's also possible he might have become like Tank and decided the Empire wasn't so bad. Unlikely, but he was at an impressionable moment in his life. I've done a couple of Imperial tabletop roleplaying games and generally I went with the view of TIE FIGHTER that the soldiers of the Empire might be aware of the Dark SIde (pun intended) of their organization but they generally get fed a steady diet of propaganda. Most don't try and question their cause very much as they assume the government above them is benevolent or has better knowledge of the "Big Picture." There's a lot of talk of "Necessary Evil", "terrorism", and "doing bad things for the greater good." It doesn't change the fact the Empire exists only to line the pockets of its leadership and to serve the will of a psychopathic lunatic devoted to a religion of self-agrandizement. Being loyal to a cause and self-sacrificing is wonderful IF THE LORD RETURNS IT--if he doesn't then the entire samurai-master relationship is meaningless.