30% of the US can’t drive, whether because of disability, age, financial hardship, immigration status, or any number of other reasons. Why don't you hold the current system of "motorized transport" to the same impossible standard of solving all transportation needs as you expect of bikes?

Because your groceries are delivered by truck. Your houses are built with materials delivered by truck. In fact your entire lifestyle and the existence of the services which support those people, is provisioned and delivered by local road transport.