I don't believe that I've ever ridden on a horse. I've ridden on a camel and once on a mule, but never a horse. My kid has been on a pony ride at a county fair, but not myself.
Speaking of horses, I saw a bunch at the Warriors championship parade last Thursday. The brought in the Budweiser Clydesdales. No samples though. The California Highway Patrol had their mounted patrol on the parade route. They're normally working in Sacramento patrolling state property. I remember they had some huge horses too. One looked like a Clydesdale and another was a Shire. It was really strange seeing someone riding a draft horse though.