I already addressed a similar reply of yours
here, but you didn't address my reply.
But I can do it again:
1. You say morality "lives" in motive. If by that you mean that whether some behavior is immoral depends (at least partially) on motive, sure (if not, what do you mean?), but that
in no way implies that it is required that the world is made by a mind in order for morality to be objective, or that it is required that the world be made by a mind in order for it to contain motive.
If you have other premises, I would ask you to complete your argument, else it's a non-sequitur.
2. Your argument here is not an argument from objective morality to the existence of God. Rather, it's an argument from the existence of
motive in the world to the existence of a creator of the world. But since the actual world contains everything that exists, how would there be a creator of it?
In other words, how do you get a creator of the world, given that any creator is in the world?
But if you are using "world" in a restricted fashon, what is that fashion?
a. In other worlds, what <i>proper subset, or part[/i] of causal reality cannot contain motive without a creator?
b. Let "actual world", or AC, stand for all that actually exists, including any creator of anything. Then, the AC contains motive. Does the AC have a creator? How? Remember, any agent that exists is
in the actual world. In short, why does God have motive, but needs no creator?
3. Regardless, let us say for the sake of the argument that there is some agent with motive that creates the universe that we see, and which contains every other agent with motive. Let us stipulate here, and for the sake of the argument, that for some reason (or rather, for no reason, but no matter), a universe containing motive requires a creator, but the creator does not require a creator.
Then, for all we know, that creator
may well not be God (i.e., not an omnimax (i.e., omnipotent, omniscient, morallly perfect) being), and in particular, not morally perfect.
Purely for example, that creator might not even care about morality. It might have completely different values, and it might just be having fun running the universe and letting some primates evolve morality, some aliens from another planet evolve some analog, or whatever. But there are a zillion combinations in which
So, you have not shown in any way that objective morality requires God.
Side note: if by "God" you do not mean an omnimax being, please explain what you mean by "God".