[Pxtl]

Why make any art? For the love of the game. To scratch the itch. People generate ideas all the time, and most of them never go realized... is it any wonder that people contribute to somebody else's project just to see their ideas given form? Same principles as open-source, but without the protection of open-source.

Which, of course, is why modders should be encouraged to use platforms where you retain greater control of the project, which is why I'm a fan of OSS gaming.