We were brought up on a small poultry farm, and when my sister moved house when retired, she couldn’t wait to acquire two or three chickens, (not rescue ones), as she had never had a garden before.
Her DH built a run and hut, and it was all great, she gave them old fashioned names, and enjoyed the eggs.
After a few years however, and a replacement hen or two, I think the novelty wore off a bit. If they wanted to go away, it meant getting a neighbour to see to them, some rats were spotted in the garden, the chicken run took up most of the outside space. And the cost of feed etc. must have far outweighed buying a dozen free range eggs a week.
Final straw, last surviving hen was poorly, had to be put down (expensively) by vet. (Our dad, back in our childhood, wrung the necks of failing stock, a much cheaper option, but this was in the 50’s).
Never hear sis mention keeping chickens any more.