i understand what you are saying, gearhead, but if ford had decided to use belts instead of chains, you would have 4 belts, 2 of them long as fuck.
belts are louder, require more maintenance (such as 90k mile interval i'm doing), and are more prone to slipping off the gears (this last one is my observation, not fact, as my buddy has had his slip off 3 times, no matter how tight the tensioner)
it's probably just personal preference.