I kinda agree with you. But in a far more friendly and approachable way! =P
My 2 cents.
Yes the universe is inconceivably big. However the circumstances required for a planet to birth organisms and nourish them till they evolve into intelligent life-forms capable of efficient space travel are incredibly strict. You need varied species. You need varied minerals. You need a certain proximity to a star. You need time to evolve without catastrophic events. In fact there's absolutely no point in trying to list all the neccessary prerequisites because we would be here all day and still never finish the list/conceive them all.
It's widely accepted that life out there does exist; but I do think it's improbable that there are, out there in the vacuum of space, creatures flying around in saucers eyeing up our amazing planet earth, dropping off dna capsules and drinking mushroom coffee with ancient civilisations. As sad as that belief makes me, I do love space and hope/wish I was wrong.
We are incredibly lucky to exist, are we humans, and we possess a great gift in imagination that allows us to conjure up such fanciful things.