I think many years from now, people will not remember Casillas badly because of the final WC disaster. Hence why I'm not attached to people "retiring on top"--Klose wouldn't have finally won WC if he did that! (Conspiracy theory: Klose refused to retire to spite the Swedish commentators )
Spain probably should've subbed off Casillas until he got over whatever was bothering him, but I dunno if that would've been enough. They lost for reasons that extended far, far beyond just the goalkeeping. On the other end of the spectrum, Italy lost to Uruguay despite Buffon proving that he's still got it in his old age. Goalkeepers get more flak than they deserve, imo.
Spain probably should've subbed off Casillas until he got over whatever was bothering him, but I dunno if that would've been enough. They lost for reasons that extended far, far beyond just the goalkeeping. On the other end of the spectrum, Italy lost to Uruguay despite Buffon proving that he's still got it in his old age. Goalkeepers get more flak than they deserve, imo.