One of the reasons that I like the bronc riding so much (saddle bronc anyway, bareback...not so much) is because it is the only roughstock event that actually has it's base in history. That is pretty much how folks used to break out their ranch horses back in the old days.
That, and when you get a good horse and a good rider together, it's like poetry in motion. Cowboy poetry, but poetry nonetheless.
And, having ridden a few bucking horses myself, their ability to ride some of those horses and make it look so **** easy just amazes me.