How can I convince my dad to buy me a horse!?

Hey buddy I think your better of with out a horse. Your a little to young to take care of a horse, you gotta buy the horse the reins a saddle which im pretty sure that took most of your 1,500 right there you gotta be buying hay for the winter . What if the horse gets sick what are you gunna do maybe you should Waite till your 16.