Chickens eat the bugs for you. Pigs eat left over vegetable scraps, skin, parts you cut off. They also eat leftovers.
Chickens and pigs, if raised locally, recycle for you.
I see people raising their own animals more often, before giving up meat.
Here, in Canada, some cities allow the keeping of chickens. These are >1M population cities (not greater metro pop., but actual cities).
In suburban areas, this is more wide spread, and in rural communities? Now legal where before it was not.
This is not just for eggs, but butchering too.
(There are limits on numbers per household...).
So it has already happened where I live.
You may not be aware, but you don't have to butcher the animals yourself. Here, your local butcher will, just as with any game animal.
But that's not relevant, because most cities I know in Canada, have lots with space for chickens.
Neighborhoods may also have communal chicken coops, just like the garden plots they have currently.
Here (France) I've already seen small 5kg sac of cereals "for poultry" at 5 EUR, while a cooked, ready to eat, chicken is about 4 EUG/kg and eggs can be found around 10 cent per egg...
For pig is even worse: I can found pig meat ready to make sausages at home (just grinding, adding salt around 15g per kg of meat, a bit of pepper, anything else you like) less than 2€/kg...
Also, a whole pig is pretty huge investment. They are not small animals if allowed to be grown up.
I fully agree that there is a future for meat, but it’s got to be smaller amounts of higher quality, pasture or otherwise sustainably raised meat.
The way I eat meat these days is more as a supplement. A ham hock simmered in a large pot of soup. A single chicken breast in a large stir fry with a bunch of vegetables. It provides a huge amount of flavour and enjoyment, I’m able to afford to buy the best quality, and I’m convinced that it’s a healthier nutritional profile. I think it’s also a lot closer to how most people ate meat historically.