Too many people, once they understand that pseudo-tricky or smart folks can freely abuse stupid or naive or temporarily "crippled" people, go on to do exactly that.
It just lowers all maxima, consequentially lowering quality of output and quality of evolution in those buckets, including the quality of rare events.
Few people care about those very special tears of disillusionment and guilt they will shed on their death bed.
Drug-induced forced laughter and pseudo-dominance over sabotaged and vulnerable reign superior in minds that fully outsourced "consciousness" to certain value systems.
Ask yourself: when do non-functioning people on the spectrum, or people suffering from later stage Dementia and Alzheimer's et al feel most "conscious" ... that's a consciousness you can't outsource.