...how you even arrive at "moral" from your purely materialistic vantage?
Easy, the same way I came out of the dirt to type this, it stimulates the reward, or pleasure center of the brain. And you, despite your denials, and coming out of the same dirt, are motivated by the same thing. However, not everybody needs to be whipped by your angry,vengeful god to be forced to do "good". So, I will consider your need for a crutch (group hug) as a disability, with plates for the car and everything, so you can park where you want.