If merit is that exciting to you for you to make a post about getting 100(to earn more, no doubt), maybe you shouldn't have received any.
Merit is a reward for good posting, but it shouldn't be the sole focus of your time here, which seems to be the case.
You are right indeed but mdayonliner did not focus on merit alone. I did see mdayonliner's post help other people in this forum. Mdayonliner did contribute to this forum that is why he earn merits. Most members agree to mdayonliner's post and then give merit not because all did find mday's post helpful.