I'm also considering getting a horse. I think it will be one or the other. Those who know me, and only those who really know me - can understand exactly why in my mind I draw no real difference between getting a horse, and joining the military. It will have the same effect on me as a human being.
Update 6/16/10: It's looking more like getting the horse.
Update 6/18/10: I put a bid down today on the horse. Arabian stallion.