Paul, if we were determined, what would you mean when you say that “we ought not to care”? Do you mean to say that the outcome would be better if we didn’t care? The fact that the caring is part of the causal chain does have something to do with this: the outcome may be determined by whether or not we care. So if you consider one outcome better than another (only one really possible, but both possible as far as you know), then either “caring” or “not caring” might be preferable, depending on which one would lead to each outcome.
Paul, if we were determined, what would you mean when you say that “we ought not to care”? Do you mean to say that the outcome would be better if we didn’t care? The fact that the caring is part of the causal chain does have something to do with this: the outcome may be determined by whether or not we care. So if you consider one outcome better than another (only one really possible, but both possible as far as you know), then either “caring” or “not caring” might be preferable, depending on which one would lead to each outcome.