there are more people in the large cities.who will think there are many problems in an area where has no one person?
if you live in large city,you will meet more people,there are more relationships,more friendships you should deal with,whatever you feel,life has more happies,but it has more bitternesses along with felicity.
furthermore,much more beauties live in a little large cities,more money(capital) flows in large cities.so people will seek much more gains who live in downtowns than in small cities.then,there must be more incidents and many problems in big cities.however,who may refuse developed?