Fine, not Fine

How are you doing? Why do people ask this question if we really don’t want to know how the individual is doing? I guess it is just a common courtesy. We create this false image to people that yeah answer, because I care about how you and how you are doing and that is not the case. The response that I love to give is I am doing well/fine, how about yourself? The person replies the same way and we our separate ways. If you don’t care about I am doing then why go into any great details.