I’m 52 and looking for a new horse after selling my youngster as he was too much for me, and needed someone with more energy and time for him.
I’ve seen a few older horses that seem to fit what I’m looking for, particularly a 17yr old mare.
I’ll be retiring in about 5 years time and looking for a horse that will be my final forever horse. They will be with me until either they, or I die 
Apart from the likelihood of more vet bills, what else should I be thinking about when buying an older horse?