I am only making conclusions based on what I see, and I comment hoping people can tell me how I am wrong. I am still trying to figure this out, but all evidence points to what I said.

People never "do good" "just for the sake of it" - there is always a reason, whether or not the person realizes it. The reason could be, e.g., as I said, the desire to seem good, some kind of religious belief, etc. Ultimately, it is never "just for the sake of it"

I am also disappointed, and I don't know what to do with this, but I am not willing to become some kind of ignorant, delusional lunatic.

You're a very sad, very confused person. I genuinely mean this: seek help. Or at least a hug.