I don't think your conclusion follows from your points here. To me the conclusion that you can do it objectively (or at all) is an unsupported assertion.

I understand why you would want it, I don't understand why you all of a sudden assume that it is possible and that it is made possible by the principles that you live your life by.

Sure if everybody lived by the same principles, the world would be a great place, but why would you expect that to ever be the case?