Question inspired by another question: How can moral disagreements be resolved when the conflicting parties are guided by fundamentally different value systems?
In the spirit of the aforelinked question let me propose the following scenario:
- Person K believes that a moral system ought to guide people's actions. K may adhere to a moral system based on divine commandment, or a moral system based on consequentionalism (maximizing the sum of happiness of all conscious beings), or libertianism, or maybe even the (despicable) moral system rooted in Nazism, where the good to strive for is the supremacy of K's own race. L, however, believes in pragmatic egoism. L says that they care nothing for what is 'good' or 'right', they will only serve themselves and do strictly what they believe is good for them, regardless of anything else. In particular, they do not care about divine commandments, happiness of all conscious beings, anyone's freedom, nor the wellbeing of their own race. This does not immediately mean that L will always behave like an omnicidal maniac: L may even be cooperative and well-behaved as long as they believe it is in their best interest (eg they don't want to be thrown in jail). However, the second L no longer believes that cooperating is in their best interest, they will immediately stab their best friend in the back.
All conflicts stated in that question were conflicts between people adhering to some (though incompatible) ethical systems. But what about conflicts between the very idea that some ethics should be followed (whatever that ethics may be) and the utter lack of ethics, namely the belief that I should serve myself and myself only and care nothing for anything else than myself?
Can we objectively say that either of these propositions is better? sounder? more truthful? than the other one?