Because it does.
The web development industry is constantly changing and evolving. Whether it's a new language version, a new "best" method, or a new language all together, you have to stay on top of your game. That's why increasing your knowledge is vital to your career.
And that's why I created Five Minute Developer. So you can learn new tricks, hacks, and languages*, without taking away your time (because time is money).
Go ahead. Click the button to start learning!
Seriously. Click it.* Five Minute Developer does not guarantee you will learn a new programming language in 5 minutes. Probably just parts of one. It's not physically possible to learn a new programming language in 5 minutes.