Professor Bonevac, I am about your age and I enjoy watching some lectures, discussions and conversations on RU-vid: we're lucky they're available. Your eagerness to teach and your heartfelt responsibility to your students is obvious and appreciated. Thank you very much for your determination and love of life.
I like ethics. The Philosophy of ethics was once called Axilogy. A metaphysical first order idea for me is Quality. All is Quality. and all things are a subset of quality.
The "One thing" argument is related to existential relativism. Otherwise, there is no "Meaning of life", but. rather meaning in life. Kipling reminds me of Hobbs, where in the social contract you have to give up certain rights(like the right to commit murder) to establish other rights(like the right to property) So,if the good of the many should outweigh the good of the few, then, codes are made with social conscience in mind. I loved it when you said the Psych pros thought some philosophers were NUTS. HA! But, Kipling isn't one of them.