Bear with me on this: What if we can't find aliens because they are religious?

[edhopper]

7. It would appear that

technological advances civilizations are very rare, at least in this galaxy. We have been listening long enough that if they were at all prevalent, we would have seen some kind of radio waves.
But that doesn't mean there isn't alien life. It just might not have evolved intelligence or intelligence in the same way as we did. Think of super intelligent whales, they still would not need to develop technology.