I never have because it's too disruptive to the premise of D&D the way it is usually played. I'd only do it if the entire group was pacifist.
YES!!! That's just the idea. You see, I'm disruptive by nature. I'm so "outside the box", that I haven't seen the inside of the box for a couple of decades.
Should "the premise of D&D the way it is usually played" become stale or tiresome, then ways of alleviating the monotony must be found to instill new vigor into the game play. One idea I had was creating characters who gain experience in ways other than attacking. Maybe it'd be more fun to run from and evade a kobold rather that just nonchalantly extinguishing it?
Well, strictly speaking, there's no thing stopping you from solving problem with orcs raiding towns with a diplomatic solution...

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.