I'm not going to pretend that I fully understand everything there is to know about economics. However, I think you are dismissing the value of math in explaining economics. Math and physics are what explain natural phenomena like the speed at which objects fall because of gravity. There needs to be empirical evidence to back up claims like science. Science is what got us to the point we are in today. Otherwise we'd be living in a Caliphate or something like that.
This is why economics seems to be a bit like pseudoscience to me. Almost like a religion wherein someone explains the existence of a god because of some chance event or something.
I think that different economic systems work at different times depending on what technologies we have. The feudal system used to work and then we had the industrial revolution, printing press, and locomotive that freed many people and gave rise to modern capitalism. Didn't Austrian Economics emerge during that time period too?
For instance endless growth and profit can only go on for so long. Of course this is only a limitation if we stay on Earth, we could colonize the rest of the universe and have continued economic growth that way. Well up until we used up all the energy in the universe, which could happen if we don't go extinct before then.
There is only so much economic growth we can produce on Earth. If we had continued economic growth here without leaving the planet we would probably destabilize ecosystems, more than we have done, and risk our own extinction.
Edit: By the way BM I really like your blog. It looks really nicely organized in my opinion too. I'll start producing content for mine too.