You say many interesting and many accurate things.

I believe in God but I do not subscribe to any religion. I have written: "Religions have been designed to be believed and thus construct God as a deliverer of human wants if we do as we are told, which God is not. So people either blindly believe in God because the lie of what God is is believable, or reject God because the God defined by religions cannot co-exist with the reality that most people do not get what they want, or are not actually happy, and a world full of seemingly senseless tragedy and really bad things happening to good people." From my https://medium.com/illumination/why-is-it-so-easy-for-people-to-believe-the-most-obvious-lies-yet-require-proof-of-god-339a2a07cc4f

I fully agree with your thesis that morality/ethics does not require belief in God (but I disagree with the reason you get there in the last paragraph). In any event, I have also written: "When I use the term spiritual, I use it in a manner that transcends the binary of theism versus atheism. One can act entirely spiritual with or without a belief in 'god' however one understands that term. Spirituality only requires love, empathy, compassion, humility, honesty and courage.

As I define spirituality, there is a flip side to the coin and all those positive feelings— accountability, both personally and holding others accountable for their words and deeds." From my https://medium.com/illumination/spirituality-redefined-ff45cb53eaf2