My question is basically targetting various sciences that we use to understnad the real world and how we form laws in them. For example, in physics, we first see sometthing in the real world. Let it be Newton seeing the apple fall down or anything else. It could be the fine tuned constants of nature. Now, we go on to follow a mathematical path that is based on physical reality. For example, if I ask why doesn't the law of gravitation have r^3 in its denominator, then I could we answered as ,"It also has to match up with reality". So we have this phenomena of having chosen the laws that fit reality and building math like that too if I am not wrong.
I don't remember which one, but I think it was Special Relativity that Einstein formulated purely on the basis of thought and did not keep anything to fit observed reality.
In a sense then, if I ask why a law is valid, the mathematical proof will be built around axioms ultimately. Similarly if I ask why a physical law is valid, some parts of the reasoning always involves "It is what it is".
Wasnt physics supposed to describe reality? I mean when we ask why does an object fall under gravity, most people tend to tell that it accelerates down, and describe the whole law. But then isnt that just describing what was itself formed under the process of 1st seeing nature, 2nd building a theory that purposely matches reality and 3rd using it to make predictable observations as a substitution to having to observe again and again.
It still raises the concern that Nature doesn't need to follow our laws. Moreover, our laws are guided by nature as they were formed on it's basis and observation. So, what are we really using Physics then to do? Making observations?
While I recognise that knowing the "what can it do and hows" of an object are of more practical use than the "why it does that" (although knowing why seems more reasonable to me), even for the purpose of pure scientific quest, will we be ever able to answer a true "why" question? Does everything then have a reason? What if I perpetually keep asking "why" to the responses?