They don&#x27;t mean &quot;subjective&quot; as in &quot;determined by arbitrary selfish choice,&quot; they mean &quot;not resolvable in objective, axiomatic, universal ways.&quot;<p>If you &quot;believe&quot; there&#x27;s an objective morality, isn&#x27;t that just another subjective position? You can&#x27;t justify it, so why don&#x27;t you abandon the notion and go with your selfish whims?<p>It&#x27;s a flawed dichotomy. Morality is in your perception like how you know to respect other people&#x27;s personal spheres. It&#x27;s not based on rule based rationality or some axiomatic selfishness.<p>If you want to sleep well at night, you refrain from screwing people over in terrible ways. Probably you screw people over to the extent that you can get away with it in a moral-cultural sense, unless you&#x27;re particularly saintly.