It's really not fair to put words in the mouths of men long dead and gone, we can not know of their motivations if they had lived in the present because they didn't so all we can do is see that work within context.
In your worldview, it is quite fair to do that. One of modern science's favorite, yet unhealthy, past-times is to attempt to describe the inner workings of men (and other events) which are "long dead and gone." So no, you don't get to casually discard it here, because science has repeatedly demonstrated it is highly interested in using empiricism to form presently observable models and also use those present models to conjecture about the past -- regardless of whether those present empirical models can be rationally extrapolated in that direction.
Hopefully this brings you to a greater understanding why the portion of science which addresses the past is really a "religion" in it's own right, relying on plenty of faith to give any sort of credence to its claims about a truly unknowable past.
In your worldview, it is quite fair to do that. One of modern science's favorite, yet unhealthy, past-times is to attempt to describe the inner workings of men (and other events) which are "long dead and gone." So no, you don't get to casually discard it here, because science has repeatedly demonstrated it is highly interested in using empiricism to form presently observable models and also use those present models to conjecture about the past -- regardless of whether those present empirical models can be rationally extrapolated in that direction.
Hopefully this brings you to a greater understanding why the portion of science which addresses the past is really a "religion" in it's own right, relying on plenty of faith to give any sort of credence to its claims about a truly unknowable past.