Spy is 36.
I bought him as a barely broken 10 yo as a resale project, but he was never sold. He turned out to have (mild at the time) hip arthritis. I was able to lease him out for a total of 8 years, an he took two kids from “just starting to jump” to Novice. But then the hip arthritis made him refuse jump on a regular basis. He came home, (at about 20) and I rode him on the flat, and did some dressage on him, but then he developed arthritis in his “ankles” and started stumbling badly. If there was no one on him he would recover without difficulty. But if he had a rider, he would go down on his know knees, and could not get up until the rider got off. He has been completely retired since his mid 20.
He is now completely blind in the left eye, has poor vision in the right eye, and is half deaf. He also has Cushings, which is being treated.
But he is clearly still enjoying life. He runs up to the barn with the others. If he thinks I am being too slow about feeding he bangs on the door.
Music is 32, and she is mostly retired. Her vision is not great, but she is sound (not sure if she would stay sound in SERIOUS work), but she still gets ridden occasionally. Mostly when I need to pony one of the others, because she is REALLY good at that.