[Matrixbeast]

Quote:

Originally Posted by Locke

That explains nothing Matrix. The Will of The Earth literally says it can use the keys to do ANYTHING. So yes, it was selfish of the Gokaiger to focus specifically on the Zangyack and not evil at large in the first place. But then to go out and destroy it is not only selfish, but asinine.

But they can't use it for EVERYTHING.
Sentai would cease to exist, but villainy and evil would not. That's not just taking the past into account, but the future as well.
Enter and Deboss were both stopped by a Sentai, but the Gokaigers didn't know they would exist. Even if they altered the past so that every villain team from the past 30+ years would be gone, there would still be the future that they couldn't see and alter.

And that's only the future. Unless the Gokaigers created a perfect universe (Which is impossible, by the way, since there are multiple villain teams in the past that hail from alternate universes, thus technically out of the Treasure's reach to affect), using it would, ultimately, be the wrong decision.