I got my first hen that was about two years old. She was a bit skittish at first, but a few weeks being nice to her and she follows me around now, I can pick her up, ruffle her, carry her around and she does a decent job of laying eggs. Just because a hen is a few years old does NOT mean they will not make good pets.
WHY / HOW did I get a 2 year old chicken. I wanted to get into chickens but did not want to go the youngster route, I wanted one that was already laying. A friend took me to one of his friends farm, he said, there are my chickens, pick out the 3 that you want. Knowing nothing about chickens at the time I said, aw hell, just get the first 3 you can catch. He grabbed a leg stick, I went home with 3 hens.
A hen can be skittish, as an adult OR as a young one you raise from very young. Although not carved in stone, you can kind of tell when you approach them, if the bird is a psychopath or not.
I guess my point is, don't discount a bird as being a good bird, or good pet, just because it's 2 YO. There is so much more that plays into that 'good birdie' equation.
Just my 2 yolks worth.
Aaron