This one's fairly obvious, I can't think of a worse place at the moment to settle down and live your life. Details are sketchy but conservative estimates put Iragi deaths over 100,000 since the war started and that number may be as large as 1 million. Daily car bombs, shootings and rape make this a less than stellar city to live in.

Mogadishu is regarded as the most lawless and dangerous city on Earth. Mogadishu has had no effective government for 18 years. Safe travel through Mogadishu is only possible by convoy with heavily armed guides and guards, which actually can be hired quite easily. Even with guards, the likelihood of being injured, kidnapped, and/or killed is still very high. Independent travel is suicidal.

Once one of the wealthiest and most peaceful cities in Africa, Abidjan has been torn by rebellion and Civil War for the past 5 years. According to Amnesty International, thousands of women have been butchered, raped, and sold into slavery since the conflict began. UN Peace Keepers have been unable to control the ethnic as well as rebel violence, and have failed to maintain peace.

A horrible, bombed out war zone, Beirut features daily murders and constant warfare. Also at least 20% of the cities children are homeless street urchins.

Let's see: earthquakes, volcanoes, kidnapping and constant violence, murder and rape largely due to the country's drug trade. Recently, over 25 journalists have been murdered in and around Bogota

Brazzaville , Congo was considered for many years “The Worlds Most Dangerous city” and “The Worlds Worst Place to Live” – although recently that distinction is given to Baghdad. The local government is completely corrupt, electricity and water are only haphazardly available, and according to the UN more than 40,000 guns are in the hands of Congolese citizens

Ugly as Debbie's buthole.

High crime, pollution, traffic jam.