Mass transit precluding the need to own a motorized conveyance, proximity to life's staples (and the varieties available thereof), diversity in culture and idea

Mass transit precluding the need to own a motorized conveyance, proximity to life's staples (and the varieties available thereof), diversity in culture and ideas (even ethnicity, if that's your bag), architectural variety (nothing beats looking at a giant skyscraper for wondering at the sheer human achievement). It's all subjective, after all; but that's just off the top of my head.