Accesibility is important, but for decades, urban centers were sacrificed to benefit suburban, car-dependent sprawl. Even now, much urban development is burdened by mandated parking requirements. But where space is at a premium and traffic congestion is already a nightmare, why encourage more cars? Private cars don't have to be the only option (here in Boston, the MBTA has services for the disables, and apparently Uber and Lyft are making a little progress in this area).