Other intelligent life will probably have a huge effect. But simply finding life, even complex life, won't.
The question now is the reverse - suppose we find nothing? Suppose we find no life even in an environment that should have it?
The question now is the reverse - suppose we find nothing? Suppose we find no life even in an environment that should have it?
Also, I'm almost certain there are life in other planets in our solar system. It'll just take a few (relatively speaking) more years to prove it.