I know it's not your original post, nor are you alone in believing the fallacy that self-sufficiency is a positive thing, but the more people that have to cook, clean and do domestic duties for themselves, the less wealthy we will be. It's good economics and good for prosperity to specialise. It's not good economics nor is it good for prosperity to generalise. This goes for growing your own food, servicing your own car, dispensing your own medical advice and engaging in armed conflict with foreign mercenaries on your own soil. It generally dumbs down the population and reduces the quality of life we can expect. Specialisation is the key to evolutionary progress.