Simulated Reality

The idea of a simulated reality is highly intriguing to me. It triggers my criticality in a way that other philosophical ways of thinking do not.
The very thought of everything around us being a simulation; one in which we cannot distinguish between "true" reality and the reality that we are experiencing triggers my curiosity. Yet at the same time of this curiousity, I am filled with an abundance of anxiety and fear that this may very well be the reality that I am experiencing - or even the whole world right now. We just won't ever know.
Our collective consciousness could very well be in a supercomputer right now simulating our reality. The reality being on Earth in this galaxy. It could all be not real, and we'll just never know.
Is there a point in feeling this way though; scared?
Human beings have consistently been subjected to the fear of the unknown. It triggers a primal-survival instinct within us biologically called "flight, fight, or freeze" and it's something we can't seem to override. What does that mean? It means that we're all in some way programmed.
We program computers with equations.
We're all just algorithms.
The universe is built on algorithms.