Exploits make for bad games. Nobody is ever going to walk away from an exploit-centered game thinking it was enjoyable, or awesome, or probably even interesting, regardless of who wins. That should be enough of a problem to warrant fixing it, whether it's showing up at the top table of Worlds or against that noob who really doesn't know any better.
I did. I walked away from games with both Richard Hsu and Typo with a great sense of having played enjoyable, awesome, and interesting games against people who were excellent both as players and as human beings. Both games were exciting, both games featured a ton of great play. The reason they didn't degenerate was because I didn't insist that either of those guys conform to my idea of how they should go about winning. Nobody watching those games came away with a negative opinion either.
Edited by KineticOperator