The only reason we ever hear of for people failing at keeping chickens is they don’t make sure their coops are raccoon & dog proof.
They have never been overcrowded and are incredibly cheerful, healthy birds.
They are friendly enough to jump into laps if they think they’ll get a treat.
Some of them will perch on your arm or shoulder and all of them will eat out of your hand.
Even if you aren’t interested in pet hens, it is very useful to have tame chickens when you have need to catch them for wing clipping, relocating, medication, etc.
Tame chickens also have fewer and less violent arguments when establishing their “pecking order.” They are clever foragers for free range birds, though you may need to clip their wings if you want them to stay in a low-fenced pen.