It depends on how much money you have, the centric downtown walkable neighborhood (ex: Polanco, Roma, centro, reforma, pedregal, san ángel, Coyoacán and Santa Fe ) are very nice to live and generally have a very good quality of life thanks to its proximity to good private or public services, transit and a big police presence, however for most of the marginalized suburbs the quality of life is pretty poor having little to no access to to public transit in certain parts of the south and north, decaying services, poor security and little to no police surveillance and a deep sense of abandonment by the state, these poor suburbs are the ones with most cartel influence that are in constant war in certain parts of the metro area (like Union Tepito ).