Firstly, using computer we can do a lot of tasks in no time.
Secondly, a computer with the Internet is the thing with which we can read additional articles and electronic books. Almost all information we can find in it. Thirdly, computer also helps us to make presentations, reports and papers. Without them we would live very difficult(for example, thesis defense)
However, others think differently. They suppose a computer ruins our eyesight very much. Besides, it takes a lot of time children or students, so they become dependent computers.