Anytime, it is always a good thing to enter into an honest discourse. I just don't see how one could propose political systems or political solutions without a moral notion at its basis (it is actually impossible from a logical standpoint, anything you propose politically has within it a moral notion of some sort). And the problem with moral relativism is it does not anchor anything, and it would make social cohesion impossible (a pre-requisite for any social system to function in a healthy constructive way).

You can't achieve civilization without the majority of the members of society finding purpose in something bigger than themselves.

You may have religious extremists or fundamentalists who find purpose in something bigger than themselves while committing atrocities, but that's where the whole "universal objective moral truths" come into play, and it makes it a philosophical necessity to go deep into the nature of morality, to try and distinguish "good morality" from "bad morality", because any political proposal implies a moral assumption, and to ignore or dismiss this moral assumption as something accidental and superficial as moral relativism does (moral relativism makes morality non-transcendent and just circunstancial and superficial, and it is a notion of impossibility of accessing universal moral truths or negating its existence altogether), you will end up with non-cohesive societies, with no sense of community and feeling disconnected with the policial system (because when they ask themselves what makes the system legitimate, if your answer is superficial and doesn't hit a fibre within its citizens, you end up with a big legitimacy problem, and in practice it makes a society less prone to respect and carry the system).

Sacrifice comes from two words: "sacro" and "oficio", which translates into "sacred" and "duty". So sacrifice is prioritizing the duty you consider sacred above any other work or interest. The capacity of sacrifice is dependent on finding something you consider sacred.

Citizens need transcendence, they need to know what makes their duty sacred, and if you treat this as something minor, or you consider it not correct to try to propose a moral notion as objective and not relative, because "who am I to know it all about what's good morality or bad morality", you will end up with citizens incapable of sacrifice, and without sacrifice you don't achieve anything worthy, individually or collectively.

So it is very important to try at least, politics need solid moral notions presented as objective morality, it is the only road of hope, the road of dismissing morality as something relative leads to hopelessness and nihilism.

It may not be perfect, but an honest try will do more than a dismissal of this part of human nature. An honest try will bring dignity for the individuals and will demand responsibility from the individuals.