For an unknown amount of years ago, the universe was created with all the atoms we call matter, an atom is nothing physical but energy, once it decays it turns into carbon which in turn is matter but with less energy. what existed beyond the creation of our universe if far from imagination but there were other universes before ours and what that means is that there is something that contains universes known a hyperverse(not yet known to science, its my term of explanation) and which is like a giant atom, universes inside a nucleus and farther outside of that hyperverse, there is absolutely nothing, only space, no time,no existance,we are literally just a dream, just energy from the beginning till the end of our universe, maybe there is more than just us, maybe there are worlds with humans just like ours, billions upon billions of leonardo da vincis living through the renaissance in other universes. anyways, our perception(our eyes) is the as good as it gets we have evolved to see matter as something physical, when reality is just pure energy with a magnetic field which keeps them from combing with other atoms. the answer to why it exists is unattainable,millions year old extra terrestrial civilizations probably havent even scratched the surface on why everything exists, but accept the fact that everything does exist so they can explore to find the answer. our universe could also be an extra terrestrial experiment, (sending down probes we call UFOs might give a clue) but that is off topic and considered fake. everything in the universe goes in a patterned fashion and in the end turns to chaos, like the death of a star which contains noticably large amounts of energy enough to create a black hole that takes anything around it away from existance.
also by understanding how energy flows you can predict anything that will happen in the future, and why ghosts of our loved ones exist. always remember "matter=energy" like Einstein said. and energy is not something physical so the only problem is our perception of matter, the way our brain interprets what we see.