The Old Stablehand has seen it all and carried them all. He’s sick and tired of lugging your brats around but he’ll keep doing it. Most of all he wants to snooze in a corner of the pasture or in his box. Stay on his good side with regular bribes and health checkups.
I’ve met a lot of Old Stablehands at barns and riding schools. They’re the stable old horses who know better than the instructor and certainly better than the kids they’re lugging around. They don’t know why this job needs to be done but they keep plodding as long as you take good care of them.
If Old Stablehands are treated poorly they turn aggressive or unreliable. They work hard and deserve regular vet and farrier care. And extra carrots.