Caps Lock had its uses back in the olden days. Some of the earliest computers were business machines, used to input product keys and other strings of letters and numbers that often included all caps. Some of the first programming languages, like FORTRAN and Basic, were composed entirely in caps. (They didn't always require Caps Lock, mind you—a lowercase a would often automatically show up as A.)
By the 21st century, Caps Lock had become an outdated scourge. Modern-day personal computing—surfing the Web, writing school papers, chatting online—doesn't require nearly as much capitalization. As of 2010, the most-common Caps Lock users are enraged Internet commenters and the computer-illiterate elderly.
Will anyone miss this key when it's gone? It won't make a bit of difference to me, as Caps Lock is one of three keys on my keyboard that don't work anyway. Link -via Bits and Pieces