Hold on a bit folks, Human economic/social systems have never been "perfect" whatever that means, but the modern agricultural systems have population increase, intensification of production, and ecological collapse built in to them. Farming grows people that must move on to plunder new areas of the biosphere or face starvation.
This is a relatively modern (10,000 years or so) process that has reached its inevitable conclusion.
Modern Human beings have existed for around 150,000 years, over 90% of the time not living as agriculturalists.
Of cause hunting and gathering eco/social systems, are not "perfect", but they are generally (though not always) much more egalitarian, and require al lot less labour to get enough (and better quality) food to live, from a home range they exploit sustainabley.

Humans cannot easily return to this way of life (certainly not with the present population) but we can regain some of the insight of modern hunter-gatherers and try to live the only way possible, in harmony with the natural world of which we are a part.
The larger the population the more difficult sustainability is to achieve, so the most pressing need is the reduction of the population.
The favoured Human method in both H/G and AG economies is female infanticide, fortunately we now have effective and cheap conception and can reduce the population less brutally.
The Ecological crunch is coming in the next 100 years, if not sooner, so action must be taken now, and agriculture re-thought along sustainable lines.

Here endeth the first lesson

Amen