I'm going to sort of disagree with this Aart, especially on the eggs part. The meat not so much but some. In 1850 a pretty large part of the population in the US and probably a fair part of the rest of the world lived in rural areas or very small towns or villages. Keeping a flock of chickens that pretty much fed themselves in season (winters were rougher for some, depending on climate) to provide eggs and occasionally meat was pretty common. There were exceptions, there always are, people living in cities for example. And many small town people did not keep chickens or did not keep a breeding flock. But for a lot of people eggs were a staple, not a luxury. I'm basing that on the farm I grew up on, how I saw my grandparents and some other relatives live, and how some of my neighbors lived in Appalachia, a poor region. There was so much diversity it's hard to generalize, even there.
In my experience eating chickens was not a luxury, we ate excess cockerels and older spent hens and raised our own replacements. We relied on broody hens. When a hen went broody Dad would decide if we should give her a dozen eggs to hatch and raise or whether to break her. That decision was part of his farm management. Those broody hens would probably hatch out maybe 40 chicks a year so that's what we ate. If Dad wanted to rely more on chickens we could have hatched out quite a few more. His flock was typically one rooster and 25 hens. Those hens often went broody. We used a rabbit hutch as a broody buster.
We raised hogs, which is where we got most of our meat. Those were fed on slops, kitchen wastes, and things that we grew, including some weeds we gathered. We raised cattle but that was a cash crop, calves to be sold instead of eaten. Maybe 10 times a year we'd go to the lake on Sunday afternoon and catch fish, partly for a fun family outing but partly for the meat. And we ate a lot of dried beans. A typical supper was dried beans, cornbread, milk and raw onions. I thought it was a good meal. Many of our meals were meatless, especially lunch and supper. Our staples for breakfast were eggs and pork.
Aart, one of your sayings is where romance meets reality. Shadrach is putting up a purely hypothetical situation with his assumptions. If you use his assumptions and definitions he is right. If you control the assumptions and definitions you control the outcome. In my experience I find his assumptions to be more based on romance than reality. I think a lot of arguments wouldn't even start if we could agree on definitions. People that really rely on what they raise to eat would not do it that way. I was raised with people that relied on what they raised. It wasn't easy ans they did not go out of their way to make it harder.
I agree on the delusion of many people on this forum and in the world in general. For some, romance never meets reality.