If you think you're living in a simulation, maybe you're projecting something about about your cushioned (alienated) consumer lifestyle onto life itself. Your been absolved (robbed) of contact with the roots of your life. You sit in comfort zones, nibbling and sipping on life's material fruits, discarding packaging to the netherworld, wondering if the roots ever even ever existed in the first place. You're starting to doubt it. Maybe you're just living in a simulation.

I'm more interested in this idea as a product of contemporary materialism than as a testable physical theory.

Study semiotics, then ask yourself again if you're living in a "simulation".