What you have told us is rubbish. The world is really a flat plate supported on the back of a giant tortoise.

One could say: "The boundary condition of the universe is that it has no boundary." The universe would be completely self-contained and not affected by anything outside itself. It would neither be created nor destroyed. It would just BE.

Theology is unnecessary.

Many badly needed goals, like fusion and cancer cure, would be achieved much sooner if we invested more.

Philosophers have not kept up with modern developments in science. Particularly physics.

I believe everyone should have a broad picture of how the universe operates and our place in it. It is a basic human desire. And it also puts our worries in perspective.

The usual approach of science of constructing a mathematical model cannot answer the questions of why there should be a universe for the model to describe. Why does the universe go to all the bother of existing?