A new breed of ravers?

A discussion over the weekend with some friends brought out the fact that the people going to the drum'n'bass parties here have changed almost completely over the past year and a half or so. There seems to be a whole new generation of party goers that have replaced the old (who are these people and where the hell did they come from?). Guess we're getting old or something but where are the rest of the "oldies"? Indeed, times they are a changing...