Honestly enough, as forst I didn't want to use PHPNuke just because RioCar is not a news site per say. But it's working out well for all the stuff behind it, and has given me more time to add features to the site instead of worying about the code it's self. And thats PHP's main advantage, building sites that allow people to put content on the web, and not sit burried in a book learning HTML. Tony, Tony, Lorien and Sven have all put quite a bit of content into the site without ever touching files on the server or writing anything beyond basic HTML tags.
ASP and other languages can do this as well, just PHP is more widespread at this point, and for a good reason. It's awesome.