well it is your parents house ... their land ... maybe they have their reasons ... do they ever have to care for the horses for you ?? ... if you have horses then maybe offer to sell one to get a new one ... You don't really have much of a reason to be mad at them in my opinion ... it is there choice if you have a horse on the farm ...
... I was a little ticked at my parents when they wouldn't let me go to Cuba .. but I understood, so I couldn't really argue because I understood why ... and then in the end we worked something out that will be a lot more fun because I get to spend it with MissLKcee which would be more fun no matter where we went