A "meta-argument" against all future arguments for God's existence ?

[Mister Agenda]

Of course, some people believe that it survives after death, but how it is not known.

And it seems that the idea of soul originated from the idea that when the ancient man cremated dead bodies, they thought how the smoke coming out of the body is a soul going to heaven.

That's an interesting take. I always thought it was because we seem to be able to live in a place intangible and invisible to the physical world when we dream. It didn't seem to necessarily follow that when our bodies died, the part of us that dreamed also died. But I'm being very speculative.