Hmm. Wow. Most of us are just struggling to even get one horse.
I know you've probably heard it before but be thankful for what you have. That's the way your parents probably see it--you have one nice horse, and you don't get them any other reasons other than "I NEED another horse."
No one "needs" a horse without having any reasons for it... other than having a horse as a status symbol.
Horses are a very rare privilege, not a right.
It's a dangerous business, Frodo, going out of your door," he used to say. "You step into the Road, and if you don't keep your feet, there is no telling where you might be swept off to."