For whatever reason I always feel compelled to kill/knockout everyone. Hell, many of missions in Deus Ex I would sneak in and when leaving, kill/knockout everyone. Deep down I think it is my desire or compulsion to collect everything, guns, ammo, datapads, etc.
As the joke goes.....
What's your usual strategy in stealth games?
"You must gather your party before venturing forth"
"Go for the eyes Boo! Go for the eyes!"