ExcellentCryer

Question: After Luke and Vader's duel aboard the second Death Star, Why does Luke deactivate his lightsaber and throw it aside?

ExcellentCryer

Chosen answer: Palpatine's trying to turn Luke to the dark side, to make him his new apprentice in Vader's place - he wants Luke to strike the now defenceless Vader down in anger and hate and thus open himself to the Sith way. By throwing his lightsabre aside, Luke's telling the Emperor that, no matter how much the Emperor goads him, he will not raise his weapon against Vader again and that he utterly rejects the Sith way.

Tailkinker