Ah yes. the classic "The odds are in favor of God" hogwash.
But do you really know how big space is?
Each galaxy has hundreds of billions of stars, some even into the trillions. Each of those stars may have multiple planets hovering around them. So let's just get a rough estimate of 2 trillion planets per galaxy.
When NASA turned its hubble telescope into a small blank patch of space for a 3 months, they snapped a picture in just that one spot that shows light from thousands of galaxies in just the visible distance of a NASA satellite. So let's say that in the visual range of a NASA satellite at any small patch of space, there are about 5,000 galaxies.
(
http://apod.nasa.gov/apod/image/0403/hudf_hst_big.jp)
This image depicts what the satellite found in a speck of the sky only about the width of a dime 75 feet away.
So, in the visual depth of a NASA satellite in any tiny patch of dark sky, there are about 10 quadrillion planets or a 1 followed by 16 zeros.
Now, I wouldn't be the best person to look to to make the final calculation of how many different versions of that same view exist in our sphere of vision, but I think we can take a highly understated guess and say 20 trillion (This is about what it would be if the view was the diameter of a dime, not a dime 75 feet away and if viewpoints were all ending at the earth's surface, not in deep space. So needless to say, 20 trillion is a gigantic understatement.)
If all these were the case, you'd have 200 septillion planets in our best telescope's visible depth of space. Or - 200,000,000,000,000,000,000,000,000 planets.
Although of course, you have to take into account that, given the speed of light.. this is our visible representation of the galaxies in our viewable depth of space.. at 5% of its current age. New galaxies and stars and planets have been forming for 11 trillion years since then.
And have we forgotten gliese 581 c? The recently discovered planet that has the right conditions to hold liquid water and is only 20 lightyears away, within the 100 closest stars to the sun?
No, saying that it's too impossible for life to form is ridiculous given the scale of our universe.