This doesn't answer the question. Why is doing things Joe doesn't like, or making his friends sad, bad? Consequentialism isn't a moral system by itself; you need axioms or goals.
Why is doing things Joe doesn't like, or making his friends sad, bad?
Because ceteris paribus, I prefer not to make Joe or his friends sad (which is an instance of the more general rule, "don't violate people's preferences, ceteris paribus"). And before you say that makes morality "arbitrary" or something along those lines, note that the overwhelming majority of society (in most Western First World countries, anyway--I don't how it is in, say, the Middle East) agrees with me.
So yes, technically you could have a preference for violati...
Link to Blog Post: "Extremism in Thought Experiments is No Vice"
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