To those who say the world is accidental
To imply that the world is accidental would imply that there is indeed a God and he made a mistake.
Atheists don't believe the world and universe were created by "accident" they just think the universe simply wasn't created, it just came to be.,
think about this: When you walk into a building, do you think, "What accident made this?" No, you don't think that, you know someone put time and effort into building it.
That is a ridiculous analogy. Of course when you walk into a building you assume someone made it, because from experience we humans know that buildings have been made by people and that such structures don't occur naturally. All of the materials for the building can't be found naturally in such shape and structure and we have seen humans design and make these buildings.
However with the Universe
no human has ever seen anything to compare it to and determine whether it has been created or not. This is known as the "watch maker" analogy except this time you used a building:
http://en.wikipedia.org/wiki/Watchmaker_analogy
Do you think something just went boom and made everything around us? No way! Someone had to have designed this world because people are way to complicated for us to be an accident.
You can't just make a claim without backing it up. Stating "we're so complicated we couldn't be an accident" is a statement, but no facts backing it up.
Why can't something as complicated as humans or any other animal species exist without a creator? What is it about the Universe that makes that impossible?
And don't just state something akin to "It just is!".