The reason is because I was hurt badly five years ago after getting LAUNCHED by the cutest little sorrel horse that I adored. I didn't break anything, but I landed HARD on my pelvis and hurt a LOT for a LONG time. I still have problems with a rotated pelvis.
Anyway, it totally blew my confidence. I passed on two really nice horses that I owned because I was spooked. And it totally weird... I could get on Angel, no problem. I could get on someone else's horse, no problem. But I didn't want to get on Bullwinkle BECAUSE I was afraid that he would be naughty and then I'd never ride him. And he is almost 17 hands and 1400 pounds.
As it turns out, I was wrong about him. He is really a very nice minded horse! (Special thank you to Mindy for all your support and for video taping the UN-disaster!)