Insect farming is growing rapidly as a sustainable protein source, but welfare questions are largely unresolved. The scale of production makes welfare decisions here enormously consequential.
Insect farming presents a welfare dilemma of extraordinary scale. If insects have morally relevant experiences — even simple pain states — then the billions farmed annually represent a welfare concern dwarfing all vertebrate farming combined. The evidence for insect sentience is weaker than for vertebrates and crustaceans, but is not negligible: insects show nociception, learning, and some apparently motivated avoidance of noxious stimuli. The precautionary welfare principle applied here would suggest investing in welfare research, developing more humane slaughter methods, and considering the moral implications of insect farming scale at the policy level — even before scientific certainty is achieved.