Why you should learn AutoHotkey: What can AHK do?

Hi, Please: How to
hotstring = "abc"
::%hotstring%:: TEXT
=> Enter "abc" repalce by TEXT

This is actually something I've been meaning to do for a long time. Put together a list or a presentation of reasons why people should use ahk, because I like to get people onto using it too. But whenever I try to remember all the things it can do off the top of my head I draw blanks. So now I have a video I can simply link people too. So I guess this video automates in different way:P