You describe motives as if any act is limited to one motivation.<quoted text>
No. Lack of belief cannot be a motive for anything. Only an urge or desire can be that.
Nope. Lack of belief motivates nothing. I lack the belief that a land mine is anywhere I might step, yet I remain in my seat typing. Why? I have no motive to move right now.
Wanting to be somewhere else motivates the next step. Belief that it would be safe has a permissive effect, but even that isn't a motive to take the step.
Belief that it would be unsafe to take that step would not by itself be a motive to not take it. The belief has to be coupled with an urge or desire such as to go on living. If I wanted to die, that belief would facilitate taking that step.
Even if atheism were a belief, beliefs are not motives. Urges, appetites, tastes, and desires are. Beliefs just inform us how to realize our desires.
Among the motives for taking a step is the lack of belief you are stepping on a land mine.
It is not only a motive, but a powerful motive.
If beliefs are not motives, what does that do to your argument for diminishing the influence of Christianity?
Their belief in biblical principles and christian-based morality instantiated in government doesn't motivate them to do anything,...
So why the fuss?
Double standards, anyone?