Stealing from someone who is lawless is still stealing. It's bad Karma, especially if you understand Karma. (which I don't think the people in here do) You're doing that person an injustice - it doesn't matter how much injustice they've done to you or others, you're still don't an injustice to them.
If you're truly a good person you will never take anything from another, you wil try to help everyone, in fact if you want to be VERY good you wouldn't actually own any possessions (besides the absoluely necessary ones like clothes).
By stealing from a criminal you're only making their life more difficult and forcing them to resort to stealing more. You're perpetrating a downard spiral.
Killing a criminal and then taking his stuff is the same thing. It's not right to steal from a criminal just because you murdered him.
Killing a criminal gives you good karma because you've ended the life of a harmful being.
And I know someone said my first statement was oversimplified but it's not. STEALING IS ALWAYS IMMORAL. Or I'd like to rephrase Stealing always causes bad karma to yourself.
Are you trying to provide an ethics lesson for everyone, or are you discussing game mechanics? Because this thread is about game mechanics. Cool?
IN THE GAME you can shoot someone in the face, loot their lifeless corpse until it's baking in the Nevada sun in its underwear, and you get no karma hit.
IN THE GAME you can wander into a random hut and loot the place empty, and you get no karma hit.
IN THE GAME you can rob Doc blind, and you get no karma hit.
However, IN THE GAME you can kill a Powder Ganger and loot his corpse with no karma hit, and turn around and take his beer off the table behind him... and bam, karma hit.
We're talking about GAME mechanics, which clearly aren't making much sense. If "STEALING IS ALWAYS IMMORAL" why is there no karma hit when I rob Doc Mitchell? Why no karma hit when I loot the corpse I just killed? Why no karma hit if I rob random huts in the wastes? But if I swipe a hammer from a table in a faction owner's house, that's a karma hit....
I guess none of us understand karma as well as you, so explain why it's all good to rob Doc Mitchell, please.