Discussion of organized religion, the existence of God(s), and theism in general

Think about it, how is it that we, humans, are practically perfect in bodily structure? All our body parts work together perfectly. If this were pure coincidence, it would take many many different species of failure[not just on earth]to finally get one that works, even partly. It's near impossible by chance.

What I don't like about this argument is that if any of those things were to not be correct, we wouldn't be alive on that planet to know it. Of course we're going to exist on the planet that just happens to work perfectly, we couldn't be on one that doesn't.