is it a wise decision to build Three Gorges Dam in China?

Dated to 1919, the a dam on the Yangtze River was proposed to be build for power generation purposes but the idea was shelved due to unfavorable political and economic conditions. Then because of a lot of domestic and international pressure, the Chinese Government agreed in 1989 to start the construction plans for the Three Gorges Dam.
Before the construction, there were many people made a lot of debates because it would benefit many people and also cause serious problems. On one hand, there were a lot of merits after building the Three Gorges Dam. For instance, the dam can control flooding on the lower Yangtze River, which used to be a very serious problem in south of China every summer. The dam could also generate hydroelectric power, which must be a great help to reduce the electricity-lack problem in large cities, for example, Beijing, my hometown. Then it could reduce pollution caused by the burning of coal because most of the people would like to use electricity as their powers. On the other hand, the dam brings a lot of demerits, too. For instance, by building the Three Gorges Dam, there are approximately 15 billion people need to move to other places, which cost the government a huge amount of money. Forty thousand builders will work for 16 years to complete Three Gorges Dam on the Yangtze River, which means they will leave their home, their family and have to stay with the Dam for a really long time. Also many historical relics are being moved while famous scenery will not exist at all. So during 1999 there was a travel boom in Sichuan because it will not be seen forever after the construction of Three Gorges Dam. And because the location of the Three Gorges Dam is very serious and important for the safety of China, as long as a war breaks, the Dam must be the first aim of our enemy. Once they bomb it, the most developed area of China will be under water and the land full of wheat and corn will disappear in one second. Another very serious problem the Three Gorges will cause is earthquakes. A certain expert on geography said the Dam may make a more frequent earthquakes happen. The Dam will eliminate tourist trade to the area and destroy important archaeological artifacts. What do you think of the Three Gorges Dam? Do you think it is a wise decision to build it?