@TuringEquivalent,
Why does the Universe exist?
~~~ The only context where your question makes any rational sense, as far as I can see, is if you define a 'why' as a 'reason for being', a function!
Why is a hammer? To drive nails. To pull a few. To punch a hole in someone's deserving skull. Whatever it's function, at the moment. The 'complete why', would include all functions at all moments, from all Perspectives!
On one hand, all 'why's' are nothing more than ego masturbation, thought!
Whatever you can imagine is as valid a 'why' as any other, depending on Perspective!
And all that mental masturbation means nothing more than a fart in the wind, hence it's being referred to as 'masturbation'. Great thoughts feel soooo good! *__-
There is no why to the Universe, the sum total of all that exists, God!
We Are that We Are!
All existence, ever, is no more than a moment of Universal Self Knowledge, Enlightenment, and gone.
No planning, no planner, no reason, ... just 'is'.