No, I think you nailed it on the money, I thought about that, just didn't connect it to the whole parallel universe thing. I started the post thinking in an infinite universe their must be infinite everything. Since their is not infinite life on Earth theiir must be life out their. Thats my opinion anyways.
P.S. just thinking, that their would be civilizations out their with infinite intelligence. In an infinite universe their must be a civilizations dumber, smarter, and just as intelligent as us. Their also must be civilizations smarter, dumber, etc. than them. So if yo really think about it their are infinitely dumb civilizations out their to.
I just hope we discover the civilization with infinitely hot girls first.