[JCharante]

I always thought the big deal of finding life on other planets would be to deal a major blow to creationism.

[ExactoKnight]

Even a negative finding holds important implications: if we successfully survey all of the exoplanets within 100 to 1000 light years and find no life or anything even close being habitable for humans, then it would gravely inform us of the ways in which we must preserve the Earth that we have.

[jessaustin]

...and also it would be cited by creationists as proof that they're right.