Yeah but they have a few young players who didn't make the squad this time around, but who are supremely talented (think Diego Capel and Bojan Krkic) and are likely to tear up WC 2010. And Spain has qulaified for pracically every major tournament (I think) so not many worries there...
Also I said 6 years because 6 years from now soime of their top players will be in decline (Guiza, Casillas, Puyol will likely have retired from international play, etc, etc)
if they keep playing the way they have for the past 1.5 years, then I see my prediction coming true. Furthermore, this was sort of a joke thread, so...