Hi, we are creatures formed in a world of cause and effect. That’s the way our minds have developed and evolved. The fact that is seems more sensible to us that the universe shouldn’t exist is a function of this cause and effect (in time) thinking of our brains. Don’t knock yourself out. I can’t lift 500kg’s of weights and I can’t have a clear understanding of a reality without time. It is just how it is. It is fun to think and speculate, but it shouldn’t disturb us to the point of exhaustion.
Secondly, when you say ‘everything’ from nothing you have to appreciate the very little we know about this ‘everything’. Our physical reality that we perceive is just the logical, coherent and systematic behaviour of something we think of in terms of ‘concrete’ reality because of it’s changing measured interaction with ourselves.
Consider the comments of famous physicists :
“Everything we call real is made of things that cannot be regarded as real. If quantum mechanics hasn’t profoundly shocked you, you haven’t understood it yet.”
― Niels Bohr
The universe begins to look more like a great thought than a great machine.
---- James Jeans
We must be clear that when it comes to atoms, language can be used only as in poetry. The poet, too, is not nearly so concerned with describing facts as with creating images and establishing mental connections.”
― Niels Bohr
simpletoremember.com/articles/a/science-quotes/
en.wikiquote.org/wiki/James_Jeans
goodreads.com/author/quotes/821936.Niels_Bohr
I believe that our ‘everything’ is only a created secondary reality. From the perspective of being fully enconsed in a secondary reality, we often think of it as the measure of all things. As you have expressed, this ultimately doesn’t make sense and gives us a mental block when trying to understand its origins.