Sounds like much of the last 50 - 60 years mentioned earlier is Religion rather than Science.

We are told to believe in Zero point Energy, Quantum Superposition, etc, without any experimantal evidence to support them.

Zero Point Energy is a prediction based on extrapolation of a formulae below the Plank limit. So far I have not come across any experimental evidence that directly supports it. Maybe the original Formulae is incomplete, or maybe its impossible to get below the Plank limit.
Despite all the other hypotheses that ZPE links in with, until we get clear evidence to support it, we can't elevate ZPE above being a hypothesis.

Quantum Superposition is an interpretation based on Schrodingers Wave equation, but there does not seem to be any way to actually test it. When you try to observe a Quantum State in Superposition it collapses back to a single state.
One thing they don't talk about is how QS fits with the Matrix equations, which have been proven to be equivalent to the Wave equation. Matrices suggest simultaneous equations rather than Superposition.
Another thing which is not unexplained is how Conservation of Information can be consistant with Quantum Superposition. With entangled photons/particles, information has to jump around faster than the speed of light.

I agree with Uncle Al
- Science: "Believe what you see"
- Religion/ideology: "Beleive what we tell you, not what you see".