[RedMonqey]

....remarks that this is one of the few planets that can support complex life, and humans are a problem, so they've just got to go.

Isn't THAT the plot of "Independence Day"?

[A_perfect_lady]

I think it's the plot of a bunch of movies: you have been judged unworthy to live, and just as judgment is about to fall, you redeem yourself by an act of love.

It's a very Romantic Age notion. It used to be that humans were redeemed by their recognition of their unworthiness. Now it's love (usually romantic love, but sometimes familial or platonic love.)