Knightmessenger said:
Maybe some characters would not have shot first because they thought it to be immoral or against principle. Nausicaa (from Studio Ghibli’s Nausicaa of the Valley of the Wind) is one such character who comes to mind. Or maybe even Obi-Wan or Luke Skywalker. But Han Solo never was or pretended to have any sort of Jedi code or morals.

What I think is hilarious about not wanting to make Han cold-blooded is that Obi-Wan kills one guy and slices off another guy’s arm before they even fire a shot!