"Honor based agreements are pointless there is no imperative in evolution to do anything but exploit opportunities for your own (and your genetic legacies possibly?) advantage"
That very much depends on how long a view you're taking. The longer the view, the more it benefits the individual to improve the lot of the masses.
Therefore, anything that falls short of collective betterment is short-sighted opportunism which will not (eventually) benefit the individual who thinks he is climbing to the top of the shit pile.
I would rather be at the bottom of the celestial pyramid than at the top of the excrement one, ymmv.