Perce,
If there is no external point of moral reference then it does then become more of a question of taste in which any supposed moral arbitration claimed is mere malarkey.
First, that’s your basic, common-or-garden
argumentum ad consequentium fallacy: “If X, then consequence Y” (Y being something you don’t like the sound of), therefore X must be wrong”.
Second, “taste” is wrong but essentially morality being what we intuit and reason it to be is basically right.
Third, “moral arbitration” is fine at a personal and at societal levels because prevailing moral positions are those that achieve the greatest consensus. The notion that we should instead go to some ancient texts (but only the ones you happen to subscribe to) for a set of moral instructions that are often by moderns standards horrible, that don’t address at all sorts of important moral questions, and that are themselves often internally incoherent or contradictory is bizarre.
Fourth (as I explained before and you just ignored) the analogy with aesthetics is still a perfectly good one (morality being if not an offshoot of aesthetics then at least a close cousin of it). Intuitively people respond positively and negatively to various images, sounds etc and consider them to be “good or “bad”, and often too they will add reason to support or change these positions. We do these things quite readily without appealing to some notion of universal standards for good/bad art, good/bad music etc so what’s so special about morality that it can’t work the same way?
I’m not arguing that humanity is a sufficient source of morality.
Then you should be.
You are and I look forward to your non sentimental justification. As it happens humans are a source of immorality although I’m neither ruling SUFICIENT immorality in or out.
Gibberish.
At the moment your moral theory suffers from a lack of moral arbitration…
No it doesn’t – see above.
…with the added problem that you might be talking about something other than morality.
Only if we accept your assertion about what “genuine morality” must be, but as we know you’re unable to produce an argument to justify that claim there’s no reason so far at least to take it seriously.