It's incredible because only 20 years ago, we thought exoplanets were rare. Once we discovered that every system has at least one, we thought they'd mostly consist of gas giants (because those were the only ones we could detect at the time). Now we know rocky planets (like Mercury, Venus, Earth and Mars) are very common. As I posted a couple of months, we now believe 1 out of every 3 planets are Earth-like and we believe most systems have at least 3 planets, so this is furthering our best estimation that there is a Earth-like planet in nearly every star system. That journey from believing planets like Earth were rare if not one of a kind, to believing Earth-like planets are very common is incredible to me.
There's a chance that a planet with the right atmospheric conditions would be in a distance range that's not too far but not too close to the star.
That may not be true anymore, or at least our definition of what is the right atmospheric conditions, may not be true anymore. We think there is a good change of finding life in the oceans on Europa, but even most interesting, there is solid evidence pointing to life (basic bacteria and other microbial life) existing in the methane oceans of Titan, presently. That would change everything in terms of what we think the conditions have to be in order to have life.