Yeah, we are at the point that we are getting data on black holes colliding millions of light years away from us based on the deviation of a Lazer across miles over the width of a few atoms.

To suggest the universe is full of life and we simply can't see it? I don't buy it.

I think it's more likely that the signals just aren't there, because they are... Not hidden, but are too weak and crossing too grand a distance to be detected.