Mentioned this on another thread…many long time horsemen prefer to let them go when they start having problems getting around due to chronic pain or trouble rising unassisted, require constant meds, repeated choke, colic or infection from wearing or missing teeth or trouble holding weight. It’s also hard to realize what they feel as their senses are failing, The ribby appearance noted in TG is not normal in a healthy senior with everything still working. No doubt there was a cause and no doubt it’s their business, not ours, specifically to avoid having to defend their decision to cyber doubters and accusers demanding proof. In the old days end of life decisions were accepted as part of the journey of horse owning and managing and privacy was respected.
We tend to wrap up our memories in animals who saw us through a good part of our lives and see through those memory tinted rose colored glasses. Not really through the eyes and feelings of an aging animal that doesn’t understand why they don’t hear and see so well, may not taste things well and hurt all the time or get the unpleasant, scary vet visits.
Far as life span, if as many lived as long as some seem to think they do, the Equine insurance companies would continue to mine that market for fat profits instead of stop offering anything but minimal, capped coverage, if that, in late teens. They have statistics to back up that decision.
Mines 27 and starting the slide. I won’t wait until it lies dying in pain at an inconvenient location and time or starts getting ribby. That would be for my memories with the horse, not the horses best interests. No owner or manager needs to defend that decision.