That is the assumption of materialistic science. But the etymology of “nature” refers to Birth. So, your understanding could be construed as “anything Born must be Natural : no miracles, including Virgin Births”. So I make a distinction between Natural and Physical. That’s because most of the universe is Physical, but a minority is Meta-physical : Life & Mind. By that I mean non-physical, in the sense that Mind, cannot be known by any physical senses; only by rational inference. So, if Consciousness has been here from “birth”, it seems to be only recently waking up. So what “spanked” it into knowing the cold cruel world outside the warm fetal womb? 
Philosophers and Theologians over centuries have wondered & speculated about the cosmic “why” question. And their answers are recorded in religious scriptures; in which human speculations are presented as divine revelations.
Did you ever ask your mother : “why was I born”. Neither did I. Maybe the World Mother was knocked-up by another god, as often happened in myths and scriptures. So, my answer is simply : “I don’t know”. 
I can agree in general. Unfortunately, I have developed a special vocabulary, to avoid the misconceptions built-in to most Mind-over-Matter theories. The terms Mind and Consciousness embody traditional theological prejudices that I try to work around. 
No. I don’t think of Sol in that way. 
According to Confucius : “The beginning of wisdom is to call things by their proper name.” The question here is how to define that Property. And my understanding of the properties of “spirit” and “information” diverge in the context of Religion or Science. So, we need to select our names carefully. That’s why I quibble about terminology. 
I will preface this comment by clarifying that I agree with the bold assertion of this topic : currently, philosophy is all about the “hard problem” that physical Science cannot answer. But my personal worldview is similar to A.N. Whitehead’s Process Philosophy, and focuses on the role of Active Information and Governed Causation, which are not well known. You can Google those terms, if you’re interested in a minority view.
However, I have no formal training in Philosophy, so most of my argumentation & terminology are based on 21st century Science, not traditional Religion or ancient Philosophy. Also, many attempts at a solution to the Physical vs Metaphysical Problem make assumptions that I don’t fully agree with. I won’t go into a litany of nit-picking here. I’ll only mention a few : All Mind1 ; Mind from Matter2 ; Consciousness is an Effect3. 
1. Panpsychism vs Enformationism
Panpsychism is not an illusion. It’s just an incomplete explanation.
https://bothandblog9.enformationism.info/page48.html
2. Right Stuff to Evolve Consciousness
So, we ask a hypothetical question : what is the “right stuff” for evolving living & thinking Matter?
https://bothandblog9.enformationism.info/page10.html
3. The Origin of Everything
Science has mistaken consciousness for an effect when in truth it is a cause.
https://bothandblog9.enformationism.info/page21.html