If you want to live in a crime-ridden, poor and dirty city, you have tons of options! That includes places like Karachi, Freetown, and Baghdad that feature in The Best Worst Cities Live. in the world. Baghdad, Lagos, Damascus, Freetown and Karachi are among the worst cities to live in. Violence is normal in Lagos. Apart from violence, poverty, unemployment, pollution and population density are all very high in some areas. Not everyone can live in such places. Living here people have to face many problems. As a result, if If you're relocating, make sure you're aware of the areas you shouldn't be visiting.