|MadSci Network: Computer Science|
You've asked a very short question, and hence I'll keep my answer short. Computers are a tool used to perform tasks. Like pretty well any tool, they can be a blessing or a curse depending on the task they are applied to. For example, you'd probably feel blessed if computers allowed your doctor to stay in better contact with his/her peers, learn more medical knowledge than they would do otherwise, and save your life. On the other hand, you'd probably feel cursed if organised computer hackers broke into your bank's computer, and stole all your money. Probably the best way to answer this question is to ask you to imagine the modern world without any computers. Do you see such a world as a better or a worse place? Personally, as a computer scientist, I'd be out of a job if there were no computers, but I'll let you come to your own decision.
Try the links in the MadSci Library for more information on Computer Science.