How you look at the computer capacity?

Computer is often said to be the greatest invention ever in the human race's history. Yes, it is.
Just imagine what it'll be like if all the computer broke down. Just think how many scientific achievement are achieved by the great help of the computer. Computer are now playing the second most important role in our society after we human.
Computers are used in the science field, manufacturing field, in the army, in the school and in most families. Somethings can only be done by computer, like doing the huge calculation work in astronomy domain. Something can be done more efficiently can easily with computer, like manage the record of the bank system. And often, Something can only be enjoyed with a computer, which you would know once you got one in you room.
Well, computers help us everywhere, do the hard work, entertain us.
But, after all, it's our tool. Don't treat it as your best friend. It can never replace any one in our life. Howeve