Why would anyone use Notepad as a primary editor?

From time to time I see people mentioning that they are using Notepad as their primary editor. Web site developers, I think, are the most common case. Why would one be using Notepad? I mean, I have been programming for Windows since Windows 2.0 and always thought Notepad was a horrible development editor. There are tons of free editors available that are at least able to display line/column numbers, have better Find/Replace functionality and usually are even able colorize markup. In fact, I can't imaging living without color in my editor anymore! If I found myself on a platform that didn't have one, I would write one myself :-)

If you really use Notepad, what prevents you from downoading a better editor? Or does word 'Notepad' actually mean 'my favorite free text editor'? :-)