Even if Quantum Mechanics (as you like to describe it rather than Theory) was the end all be all (explaining all of the observable effects)…then explain why are 100% of the world’s theoretical physicist are still trying to reconcile it with Relativity!! 
If what you said is true then would we have a complete working model that predicted everything that would happen. I would then be out of a career.
This is because Quantum mechanics and relativity produce a completely contradictory description of the world which cannot be reconciled with one another. The quantum description is non-locality, uncertainty, discontinuity and wavefunctions. The relativity description is locality, certainty, continuity and particles.
After decoherence in quantum mechanics one can adopt relativity to explain the behaviour of particles but prior to decoherence relativity cannot be used because the particle exists as a wavefunctuon so quantum probabilistic analysis is used instead.
However, decoherence only gives the apperance of the wavefunction collapse and now even macro objects can be modelled and explained using quantum mechanics and relativity is falling by the wayside.
The use of string theory is necessary to explain the stable behaviour of particles which it explains are not probabilistic and uncertain and can be explained by positing other dimensions and quantum strings.
As for the extra Dimension that has not been proven either.
No, it has. This is because quantum events do not take place in the classical world of 4D space-time. If they did, they would violate the laws of relativity such as locality, conservation of energy and the fact that nothing can travel faster than the speed of light. Einstein was aware that quantum mechanics violated Relativity and he set out to disprove quantum mechanics using the EPR problem and showing that it gave rise to a phenomenon called “spooky action” Then Bell was able to demonstrate that there was no violation at all, because quantum information does not travel in 4D space-time, but outside of 4D spacetime in the quantum world. This is by definition makes it a 5th dimension.
It sounds like you do not realise quantum mechanics contadicts classical physics. There is no contradiction if you posit that quantum mechanics deals with the 5th dimension and classical physics deals with 3rd and 4th dimension.
As for the waves of probability you describe, you must read Quantum Mechanics by Durac better. It states that you can not know the state of a system (waves, particles or combinations of) before measuring (observing) it. Schr?dinger’s equation just shows us that when we observe a particle or wave, we force it into a particular state based on the wave function . This is the basis of the Uncertanity Principle, that we can not know both the momentum and the position of a particle after we measure it. We can only know one of the results. An example. If I have a box with a live cat in it and connected to that box is hose that connects to another box that contains a radioactive material. There is a probability that the radioactive material will decay which would release radiation and therefore kill the cat. I can not know the state of the cat (whether it is dead or alive) until I open (observe) the box. At that point I force the cat into a particular state (dead or alive). This in no way disproves that the cat does not exist rather that I can not know the state of the cat until it is observed, and only then I can only measure whether it is dead or alive and not both.
Yes I am very well aware of Schrodingers cat. Schrodinger devised this in order to show that Bohr and Heisenberg were wrong about the copenhagen interpretation that the the particle did not exist prior to the act of measurement. While, he accepted the particle exised as a wavefunction at some point its collapsed into a particle even before we measured it and the conclusion that our measurement caused it to collapse was absurd. Thus he posited there are hidden variables prior to the act of measurement which collapse the wavefunction.
All hidden variables theories have now been disproven. As I showed earlier with the article I posted. There are no hidden variables, the particle is indeed being collapsed on measurement. Eugene Wigner, the developer of the Wigners friends paradox and the consciousness-based theory of measurement shows clearly through strong argument that the entire system is quantumly entangled prior to measurement so it cannot collapse itself. This means that consciousness of the observer is the only entity in the world that is not entangled because the measurement chain only ends when the observers makes a measurement.
Matter is matter. Is was proven by Einstein and others. He in fact won the Nobel in Physics for this (photoelectric effect) and not Relativity. Hence the photon. A discrete amount of energy that has both wave and particle properties.
Einstein has long been disproven and part of the reason he hated quantum mechanics so much was because it contradicted his theory as well as his religious sentiment of the elegance and order of the universe, which quantum physics contradicted. Hence why he famously said, “God does not play dice”
The fact is clear that energy either is a particle or it is a wave. Sometimes it exists as a particle and sometimes as a wave, but it is not both at the same time. This is what explains quantum tunneling where a particle can jump from one state to the other by turning into a wave and then into a particle again. The double slit experiment is very clear that the electron is either a particle or a wave but it is not both at the same time.
Yes we have proven there is a quantum “world” (existing in our own 3-1 universe and not some other dimension) that is made of quarks, photons, electrons, positrons, and other parts of Matter and Anti Matter. This is not another dimension. There is a physical world. The general theory is that our world of 3-1 space-time is carved out by energy and matter (both interchangeable between each other E=mc^2). Since we can not at this time prove (or observe) other dimensions whether infinitely larger or smaller than our own, the other theories have no grounding at this time.
Also just a point. If we knew Quantum Mechanics had an answer for everything you want it too… the entire scientific community would be out of a job.
The scientific community want to keep their job that is why they cannot accept that quantum physics requires an observer in its theory to make it work. They want to keep consciousness outside of physics so they ignore what quantum mechanics is saying and continue to work with particles(electrons, positrons, matter and anti matter) However, quantum mechanics is very clear that prior to the wavefunction collapse there are no such thing as particles.
The scientific community will eventually have no choice but to accept quantum mechanics has proven that this physical world would not exist without consciousness. The evidence supporting this is staggering now.
