Mario bores me...

[Kriven]

That being said say if a skilled player were to pick up Super Mario World today then he'd be able to whizz through it like nothing and beat the game 100%

Despite this, SMW is still infinitely more fun than NSMBW and NSMB2.

In my opinion it isn't the "Challenge" or "Lack of challenge" that has ruined the past few Mario games. There's just nothing memorable about them. They don't have a personality. They simply exist.