Life in general? everywhere.
Sentient life? we forgot the dolphins.
Spacefaring species? That's a different thing. Resources are not a problem. Hence money or greed is not a problem. hence war and strife over difference are not a problem either... Religions? seen a lot of them. We humans always want more... but when you have it all, your priorities change. And that be life. Why would an alien race bother us? Even the word "Bother" does not come into it... The aliens that can do that are happy out. I personally find it hard to think about... What would drive me then... because I am too "Human and wrapped up in my worldview" to think about it.
And that really is the real truth...
My real name is "Tarl Tickleus" baby, but you can call me "Zaphod" . Woot. Chang, chang.