On Balance Humans Should Adopt Ethical Egoism as a Worldview

My sole burden of proof in this debate is to demonstrate that humans should *not* adopt ethical egoism as their worldview. I do not need to provide an alternative -- I just need to show that Pro's advocacy is an undesirable idea. That all said, there doesn't seem to be any specification on how I have to use this round, so I'll be presenting my case and then rebutting Pro's case afterwards. CON CASEIntellectual honesty requires that if we value our own self-interests, then we must also value the self-interests of others. This is because all human beings are fundamentally the same -- conscious, rational beings with the capacity to experience meaningful pain & pleasure. Therefore, objectively, it makes no sense for any single individual to value his own interests above those of everybody else. The mental states that I subjectively experience are no different than the mental states that every other person subjectively experiences, so there's no rational basis for creating a moral distinction between the two.In order for the egoist to keep his ethical system consistent with reality, he must value everyone's interests just as much as he values his own -- but at that point, he's no longer an egoist. He's a utilitarian. This is obviously problematic because egoism and utilitarianism are fundamentally incompatible with each other. Under the former, one's own self-interests are valued above everybody else's. Under the latter, everybody's self-interests are valued equally. The two are complete opposites, yet the former devolves into the latter when considered from an objective perspective. Therefore, the equal moral worth of all human beings renders ethical egoism to be a self-refuting and therefore incoherent worldview. Egoism should not be adopted because it is logically inconsistent with objective reality. PRO CASE(1) Ignore all of the parts where Pro talks about the benefits of a "united" ethical system, because those benefits are completely non-unique to egoism. It's not debatable that the world would be a better place if everyone agreed on everything. But there are a lot of ethical systems out there, and any one of them could suffice as the "united" ethical system -- utilitarianism, Kantian deontology, virtue ethics, natural law ethics, contractualism, or even something as obscure as Levinasian ethics (based in human empathy). Ultimately, this argument still fails to answer the real question: why egoism?(2) Ironically, Pro uses utilitarian reasoning to show why humans "should" adopt egoism. If he deems utilitarianism to be a sufficient moral framework for evaluating such an important ethical question under, then why shouldn't all moral decisions be evaluated in the same way? Pro's entire case in favor of egoism is contingent upon it being beneficial to society -- thus, Pro is implicitly placing paramount moral value on society's interests, yet egoism maintains that one's own self-interests are of paramount value. Pro's approach in this debate is inconsistent with his own advocacy! He is essentially negating the resolution for me by implying that humans should adopt utilitarianism as a worldview in lieu of egoism. (3) Of course, I don't agree that society would be better off if everyone was an egoist. It's pretty obvious why this is true: people's self-interests often conflict with each other, and rather than prescribing a cooperative solution to such conflicts, egoism tells all the involved actors to try simultaneously pursuing their interests -- it's survival of the fittest! Needless to say, this sort of widespread Darwinian struggle would destroy the fabric of civilization and be massively detrimental to society.Pro resorts to a rather strange tactic in order to pre-empt this objection -- he defends something that's definitively NOT egoism. He seems to have come up with some weird hybrid between egoism and Immanuel Kant's "what if everyone did it" test. However, like Pro mentioned, egoism is very simple -- it's nothing more than the doctrine that people should act upon their self-interests; there is no obligation for them to consider what the effects on society would be if everyone did the same, because such considerations are purely hypothetical (and therefore have no real impact on the actor's self-interests). The resolution specifically requires Pro to stick with ethical egoism, so it is blatantly unfair for him to just switch his advocacy to a radically different ethical system. Look for yourself in the "Ethical Egoism" section of the IEP article he cited in Round 1... there's absolutely nothing which even vaguely resembles his strange Kantian caveat to be found within it. This is unsurprising because egoism, by definition, is fundamentally opposed to valuing societal welfare over individual self-interests. Hold Pro accountable to his own definition, and reject his attempts at shifting his advocacy. CONCLUSIONMy case shows that egoism is an incoherent worldview as a result of its failure to account for the fundamentally equal moral value of all human beings. Meanwhile, Pro's case in favor of adopting egoism is refuted on every level -- (1) the benefits he attributes to it are entirely non-unique, (2) he implicitly concedes that egoism is an inferior ethical framework to utilitarianism, and (3) his attempts at portraying egoism as socially beneficial rely on a total straw-man of egoism.The resolution is negated.