This is what Wikipedia says (en.wikipedia.org/wiki/Insanity): “Insanity, craziness or madness is a spectrum of behaviors characterized by certain abnormal mental or behavioral patterns.
Our so-called state of conscious awareness is only an evolved chemical sensation created by our ability to process abstract concepts and experience feedback from our five senses. But we don’t know if they are even reporting what is actually going on around us because humanity has no shared sensory capability. It’s just one of the ironies of a state of apparent conscious reality. It is in the mind of the perceiver and therefore may be entirely fatuous. We will never know but when we inevitably die, we will be eaten by maggots and the cycle of life continues through manure, more or less. Unless you are cremated.