People who don’t believe it are bad.

If you even question it, people get angry and say you’re bad.

People support wars against other people solely on the basis of their disagreement with it.

People think we should spread it to other people.

Functionally, how is that different from religion?

Sure, I am using a different definition of religion because the normal definition focuses on the mascot, but I believe that is wrong and the presence or absence of a mascot is not the important part of religion. Believing things for reasons other than evidence or logic is the important part. Which doesn’t mean we need to stop doing it, to be clear, we should just be labeling it accurately to avoid becoming confused about what we are doing.

Like "don't use goto". That's religion.

Also see https://en.wikipedia.org/wiki/American_civil_religion

Are you trying to argue that some things I consider valuable were first developed within religion (which I won't argue with, though I think there's more to dig into there than might be immediately obvious), or that I need to personally practice religion to live an ethical and fulfilling life, and I just don't realize it?

Because, if it's the latter, you're again refusing to consider the possibility that I don't need religion. And again, my argument isn't even that that isn't true, though I fervently believe that, it's that telling me that I'm wrong and I need religion even if I don't think I do is a terrible way to convince me that we can find common ground.