Ethical systems are fundamentally conservative and primarily directed towards regulating interactions within communities.
Dale JamiesonCritics of Consequentialism have often assumed that hedonism (or preference-satisfaction) must be the theory of the good, that the deontic principle must be maximizing, and that the principle should be applied to individual acts. Indeed, this version is often called "classical utilitarianism" and attributed to Bentham and sometimes even to Mill. Rather than a "classical" view it is a recent construction foisted on to the tradition.
Dale JamiesonI worry that even well-intentioned attempts to "improve nature" (say by reducing suffering) will make things worse even in their own terms.
Dale Jamieson[This approach] displays the characteristic philosophical lust to vanquish the skeptic by arguing him out of his skepticism, without appeal to moral and political considerations or to the facts of everyday life. [...] But more often than not, if you give the skeptic everything he wants, then he will be successful in repulsing your attacks and terrorizing your position.
Dale Jamieson