I was being facetious.I'm partially just arguing to argue, and partially because I like to wax philosophical, but I don't see this as a perfect world at all.
The green revolution (the advent of large scale farming) had some very positive effects - one of them being that a significantly smaller portion of the population needed to be farmers/grow their own food. It allowed people who didn't want to be farmers to do what they actually wanted to do - whether it be art, or music, or architecture, or whatever. A society where everyone is growing most of their own food is a society where people don't have a lot of time to do anything else. Specialization is a good thing - it leads to much more skilled laborers/artisans/etc.
Now, I like to grow food, and I like to keep livestock, and I like to build things and fix things and make things - so I'm doing that with as much of my life as I can (still gotta pay the bills, ya know?). People who don't like those things shouldn't have to do those things. There's nothing wrong with having someone else grow your food so you can spend time writing code, or writing novels, or designing buildings or whatever is you want to do. There's nothing wrong with wanting a hamburger and not slaughtering the cow yourself. In my perfect world, people would spend their time doing what they love - I'm sure you'd have chickens.
On topic - you're not gonna make money selling eggs (without thousands of birds) - but that doesn't mean you shouldn't keep chickens and sell the eggs. They're great insectivores (keep the ticks and flies and everything else down), they're good fertilizer spreaders, you can eat them when they stop laying, and they're funny as heck wandering around the yard. Those things all have value (monetary or otherwise).