There are a lot of disadvantages of living in a big city. Firstly, crime is the most serious problem. There are a lot of bad men all day and night doing harmful things to your life such as thef, robbery, pickpocket and so on. The second matter is overcrowding. There are too many people rushing to big cities for working and too many vehicles, so the streets are always very crowded and difficult to move. Finally, high cost of living is also a big drawback. Everything is very expensive, especially necessities. Without money you can't survive in a big city. To conclude, crime, overcrowding and high cost of living are extreme disadvantages of living in a big city.