Except for the fact that one has a basis in science, and the other is based on a 2000 year old book.
And its not an insane amount of improbability. Its insane to think we'll find other lifeforms in the near future. But with the number of planets and stars in the universe, and the billions of years the universe has been around, its insane to think we're the only ones now, and the only ones ever.
I wasn't even talking about religion in that post.
There is no evidence that the spontaneous generation of life from non-living matter is possible. Looking at it mathematically, it is completely impossible. "If amino acids were linked at random, there would be a vast number of arrangements that would be useless in serving the purposes of a living cell. When you consider that a typical enzyme has a chain of perhaps 200 links and that there are 20 possibilities for each link, it’s easy to see that the number of useless arrangements is enormous, more than the number of atoms in all the galaxies visible in the largest telescopes. This is for one enzyme, and there are upwards of 2000 of them, mainly serving very different purposes. So how did the situation get to where we find it to be?”
- Sir Fred Hoyle
The probability of just one protein with 100 amino acids randomly forming on earth is about one in a million billion. Then many proteins would it take to form even the simplest form of life? Not to mention how they would form a complex structure, with DNA/RNA relationship, capable of self-replication? Hoyle calculated that the chance of obtaining the enzymes for the simplest living cell spontaneously was one in ten to the 40,000th power.
The extreme impossibility of earth-based abiogenesis has led many to believe that life, as we know it, was designed, and deliberately placed on earth. (Whether by "God", or some form of alien life, does not matter for this point.) From a mathematical perspective, it is pretty much the only acceptable theory.
But if one wants to suspend mathematical possibility, and believe in spontaneous formation of life, that is one thing. But the idea that this could happen not only once, but multiple times, is a whole new level of impossible. Mathematics would not support that theory in the least, no matter how many "earth-like" planets were found.
Given the numbers, if life were actually found elsewhere in the universe, it wouldn't challenge general intelligent design theory - it would actually lend it support.