Can you imagine if .0001% of those planets have life on them and out of those let's say another another .0001% have intelligent life on them that still leaves us with 170 intelligent civilization spanning an 100.000 light year radius !

No wonder SETI has not found anything yet, probably there are a lot of civilizations in our Milky Way but they're spread too far away from each other for us to come into contact with any of them...so far !