They're expensive, most Americans don't have them, especially the poorer, and they're a greater hassle: people expect a driver's license. And once you've had o

They're expensive, most Americans don't have them, especially the poorer, and they're a greater hassle: people expect a driver's license. And once you've had one, they have your photo; too late to change. Also, not having a driver's license is looked down on in most of the USA, outside a few major cities. It constrains job/dating/social/living location opportunities.