A small number of chickens are helpful for soil health and benefits the community with eggs. Egg prices are through the roof because of the orange clown's tarrifs and avian flu isn't actually as much of a concern for small farmers,
When factory farmers have an outbreak it spreads much faster due to the close quarters of the hens; for small time chicken owners avian flu is either not an issue or SIGNFICANTLY more easy to manage. For those concerned about noise; roosters make all the noise, hens are much quieter.