Do the right thing, even when it hurts.
Let's not forget that Han was a criminal and a smuggler and probably killed hundreds of people during his career. Same with Lando. And watch Clone Wars...every Jedi in that show is murdering people left and right, including the "heroes" Anakin and Ahsoka. Luke almost killed the Emperor while Emperor was unarmed. Rey tried to kill Kylo. Finn killed hundreds of people on Yako