I bought a 13 year old when I began riding at age 50. Today we are accident free, I am still learning, and loving our trail rides! My advice would be to not get so hung up on the age. Yes, I would have preferred a younger horse so I could count on a few more years together, but whether 10 or 13, it's just a number....look at what the animal has to offer you in the long run and what you can bring to the horse. Are you a match? At any age, safety is the number one concern. After that, for me personally, is the enjoyment factor. If I have to worry about safety, I can forget the enjoyment!