First of all: Yes, the size of the universe alone says a lot about the actual likelihood of ET life. Why? It's all about chance. The greater amount of stars = greater chance of a planet being in that perfect location, and with the greater amount of planets out there = greater chance of a perfect planet in a perfect location which equals to life.
Stop looking at it from a conspiracy theory view and look at it from a scientific view (if you can handle that).
And no, its not irrelevant to the discussion, its more relevant then the bullshit you spew out of your keyboard.