The question “why” is uniquely human.
It’s an emergent property of language. Outside of the human thought bubble, “why” does not exist. You can prove it to yourself by going to sleep tonight. Where is the “why” in deep sleep?
“Why” is not all-inclusive. Using “why” on everything is like using a hammer on everything. Not everything is a nail. Not everything has an underlying reason to its existence.
When you hammer imaginary nails, you may do some damage. But you won’t discover which nails are imaginary until you try to hammer them.