The baguette is contaminated and needs to be incinerated, so no. You can't have your baguette and eat it too.

But the fact is that we just don't know how common life is (and more importantly intelligent life). Currently we have a sample size of one and that isn't enough to draw any meaningful conclusions.

Life has to come from something and the stark reality may simply be that for all those variables to come together in the perfect sequence and environment may not be as easy as we might imagine.