[kevingadd]

Excel's one of the first apps I learned to use and it's still a useful part of my toolbox to this day. It's incredibly powerful, and unlike so many modern web/iOS/android 'apps', it teaches you that the computer is your slave, instead of the other way around. You don't have to conform to the whims of some developer and bend your tasks to fit only what they anticipated.

You could certainly create a better spreadsheet than Excel and teach it to kids instead, but it's a great way to get started when it comes to understanding that computers exist to do your bidding and that you don't have to be afraid of numbers and data.