I bought a horse, a dragon attacks, i dismount to start fighting, the dragon draws me away from my horse, then changes direction (i'm following it still of course) and my horse has vanished. Maybe the dragon ate it?
Clumsy things that are in way and make getting in a fight difficult due slow mounting/dismounting. Also, the fucking horse insist on helping me, which means i hit it accidentally. No horses for me anymore. Red Dead Redemption did horses right with its "whistle" function and having ability to call a new horse if the previous one gets lost or dies.