I appreciate the opinions shared and wanted to answer a few points raised.
I am not saying a lot of money needs to be spent, or that every chicken needs to be taken to the vet when it is sick. Quite the opposite. A lot can be achieved on a shoe string. If you raise for meat, or even for pets then culling can be the kindest option if you can't afford veterinary care for a serious injury or condition. But you should not keep chickens if you cannot afford basic OTC medicine and regular preventative treatments.
I personally rarely visit the vet with my chickens, simply because the local vets know nothing about poultry. And I'm in a rural area! But I could afford the treatment if I did choose to take them. Like for example to get a necropsy or blood test if my hens were all getting sick, or possibly for a serious wound that I thought needed antibiotics but would heal, but some on this forum wouldn't even do that.
I also have two second hand coops that I put together and spruced up a bit. No Taj Mahal here! They don't need fancy, just warm and big enough and secure.
Feed is relatively cheap but I hear that some people prefer not to buy the manufactured feed for costs reasons. I'm in the UK and our human food and general cost of living is way more expensive than in the US. Despite that we can still buy supermarket chickens more cheaply than it costs to hatch, raise and butcher our own on a small scale.
My mum has told me about the chickens and rabbits they kept for food as a child in the post-war era where they were very poor. They also had a lot more fruit and veg than we eat now because they grew their own. And the chickens ate the scraps, bugs, worms, plenty of fresh stuff and corn. They probably ate better than the family tbh.