>>11427743Practicality is just as arbitrary as morality. It presupposes certain desired outcomes, which are fundamentally subjective.
In fact in this context practicality is effectively synonymous with morality. In acknowledging its subjectivity you could correctly define morality as "adherence to a set of behaviors that I feel are conducive to outcomes I desire or find relatively tolerable". And practicality could accurately be "a tendency towards behaviors that I feel are likely to result in outcomes I desire or find relatively tolerable.
Survival is value neutral in a context where morality is truly subjective. There's nothing to objectively say surviving is better than dying. That's also a subjective value judgement.
In practice it makes absolutely no difference that morality as subjective. Any more than the realisation that pain is in the mind will ever make someone okay being set on fire. Morality is an intrinsic part of human socialisation and social cohesion, and even if everyone acknowledged it was subjective, they would carry right on reflexively treating it as objective with some limited room for disagreement. Because the alternative would be a species incapable of civilisation or even tribe level co-habitation.