The Righteous Mind

Mundane, nihilistic garbage. Just because emotions might be related to morality (shocker!) doesn't somehow invalidate morality as an overall concept, or that the world is an incredibly unjust and cruel one that should be changed as soon and thoroughly as possible.

And even if morality merely serves the emotions of the conceiver, that just means we have to consider whether this conceiver's emotions are morally good or bad. Circular.