Gaffer Tape said:

Well, as you will later see in his abysmal dealings with Jabba the Hutt, Luke has some kind of inferiority complex that forces him to kill as many people as humanly possible. I mean, sure, some Imperial forces might die if the AT-AT tips over due to a damaged leg, but if you really want to rack up a good kill count, blowing up the cockpit with an explosive is the safer way to go!

Speaking of which, what the hell was Luke's plan for rescuing Han? As much as I love ROTJ, I've never been able to make any sense of the plan.