Computers are found useful to mankind in many ways......
1.if there is internet access,a man browse whatever he wish to.
2.he can play games.
3.he can chat with others.
4.he can make any file using the Word file range.
5.he can play many more applications excluding the games.
6.he can install android in the computer and use it to play games which are not available for laptops.
hope this helps u........^_^