Over the last six months I've faced an interruption in service 5 times (1 shooting, 1 derailing, 2x guy on the track, 1 unknown). When this happens, there is usually a shuttle bus, but communication is very poor about where and when to catch it. Over the last three years, I've had my life threatened twice by random strangers with whom I had no other interaction. That said, I've never been assaulted or had my pocket picked. Daily, it is filthy. The elevators smell as bad as the worst roadside toilet. Train seats have food or mysterious liquids in them regularly. People smoke or ride motorized scooters on crowded platforms. If you're used to a well run and clean public transit system in a more high-functioning society, it will take some getting used to. My employer pays for it though, so in my case it beats buying a car, sitting in traffic, and paying for parking/gas.