Patur Aval Assur,
we can also do things for the same non-benefit reason Hashem does things for, even if we don’t know what it is.
I would go a bit further than that and say that we are driven to do things for the same non-benefit reason Hashem does things for, even if we don’t know what it is. Not just that we can do things for those reasons.
My response to that is that it might be true that there are reasons that transcend benefit, but you haven’t given a reason why someone should do something for such a reason.
Your question is a non sequitur. You are asking me to describe a non-benefit reason in terms of a benefit reason. If, however, we are motivated to act because we are created b’tzelem Elokim, then “why” is irrelevant anyway. The relevant question becomes, “why would you not”?