Hmm, now you get me thinking, at my current understanding, I would say, the reason for plundering option is because it is a possibility,

but it could incur anger if there isn't a plunder agreement or allowance. (common sense tells you not to spread unnecessary anger)

Some people even farm fishes so they can go fishing those fishes. (its work) And some people pay just to have a fishing experience.

Thinking of it like a permission to hunting wild animals. Certain animals are naturally harder to hunt due to protected rights and supply.

While some are so plentiful so hunting is permitted. Knowing that if you plunder someone not under peaceful agreement will simply result in bad karma.

Should be reason enough to not plunder others for plunder fun. If you need to plunder, you do so because it's for a cause of living.

These days in civilized society we don't use plunder a living thou, we say [earn a living] because civilized society knows the laws of nature.

That saying, Imo a good plunder should only give credit rewards and not harm the plunderie nor plunderer in a successful plunder.

That's how I feel, be free to discuss, humans are fortunate enough to work @ taming the world and be tamed in return.