I'm still trying to formulate an opinion on quantum computation. If you've ever messed around with a quantum computer, it's more like running a set of experiments, over and over, and getting a statistical probability vector representing the result.

To me, this is like using soap film to "calculate" the minimal energy surface. https://instructional-resources.physics.uiowa.edu/demos/2a1520-soap-film-minimal-surfaces

Nature has a funny way of calculating it's governing equations instantly.

If you are an experimental quantum physicist, maybe it's the equivalent of a programmable system on a chip to an electrical engineer. 

Some smart people figured out how to do math with the things so... more to learn I guess :-)