A regrettable shortage of villains

Have you ever had an idea for a story or film, and then not do anything about it because it seemed either too silly or too difficult, and then you see the same idea a few years later taken seriously and actually made into a book or film?

I just had the other shoe drop for me on one of those. Reading the latest Gawker interview, I heard for the first time of something called "City of Heroes," an online game (known by those who do such things as MMRPG, for Massively Multiplayer Role Playing Game -- a kind of computer game where you are playing with others over the internet). Here's a description from the City of Heroes website:

Welcome to City of Heroes, the online world that's home to an entire universe of heroes, where you and thousands of other players take on the roles of super powered heroes - in a stunning, 3D graphical world.

Super Powered Action and Adventure

Create Your Own Hero

Choose from hundreds of different powers and design your own unique costume.

Fight Evil!

Confront super villains, aliens, madmen, criminals, and other fearsome foes. Take on personalized missions and rid the city of several different evil organizations and hundreds of individual enemies.

Form Your Own Super-group of Heroes

Band together with other players to fight evil and become the premiere hero group in the city!

Okay, I get the idea. But just one question -- If everybody is a superhero, then who plays the super-villains that you fight? Do you actually get to choose whether to be a hero or a villain, or is there a preponderance of heroes? Do they all sit around doing nothing and try to have cyber-sex with each other because there aren't enough villains to fight? Maybe the game company has to pay people to play villains?

Anyway -- it's a little similar to an idea I had about superheroes living everyday lives. I don't want to give away the whole idea, because I still might do something with it some day. If I ever write again.