Sure, in this magical land where you can set your bullets to "stun", that's what the police would roll with. Then they could arrest him, throw him in jail, and if he's still a problem, keep him in solitary. Different path to the same goal: put a dude in a box so he doesn't hurt anyone else.
But that's just law enforcement.
In war, even with your magical knock-out bullets, you're going to shoot to kill. What else are you going to do? Arrest all of Nazi Germany?
This is all moot anyway since non-lethal is nowhere near as effective or reliable as lethal; it's all sci-fi.
That didn't take long to invoke Godwin.
Just another reason Star Trek is better than Star Wars.
I like Trek a lot too, but one of the first lines of Star Wars ever was "set for stun!"
Though, thinking about it, Trek came out a decade before Wars, so Lucas probably got the idea from him.