[antonvs]

> The point is that every update of a scientific theory shifts old "why" questions to new ones. Science will not ever and does not aim to provide an answer to the ultimate question of why anything exists at all

I don't see how any of that is relevant.

The examples I gave are so definitively answered that we can derive the relevant laws mathematically, and prove that they must apply in all universes with the necessary properties. I've provided such a derivation in this comment: https://news.ycombinator.com/item?id=27336901

There are many other examples along these lines in science.

Even if scientists tomorrow decided that some variant of string theory is a more accurate model of the world than quantum field theory, it wouldn't affect these answers.

There's no aspect of the explanations of inverse square laws or conservation laws that have had their answer undermined by updates to a theory, or are less explanatory because we e.g. don't know the origin of all existence.

Science has definitively answered "why" questions in those cases, and many others.