I don't even want you to forget your theory, but I can't even get a
half-empty or half-full answer on it, so I am forced to consider looking elsewhere.
I mean you are verging on suggesting that Evolution is above Philosophy, and that your defence is that Evolution is "aprincipled" so it doesn't have to address the issue of right and wrong.
But even a cleverly aprincipled theory, still has to account for how long it think it will retain its working value - do you understand what I am saying here? Not even Christianity is without an end date: you really must deal with the issues every great thinker has had deal with from the beginning of humanity - taxes, death and Judgment Day.