Most Christians like to use the point that the complexity of the world points to a creator and that our existence can't pop out of nowhere. This to me does seem more believable than anything else I've heard...
But I'm just curious, what makes you the expert on what causes things to exist? If I recall correctly, this is both our first time ever existing. How can you declare with such certainty that the universe demands a creator? Isn't this nothing more then an opinion?
No, its not based on opinion but rather, reality of what we have. Consider :
When we examine what we do have by way of effects from the Creation event (our reality today) , we can get a very accurate idea of what the First Cause had to be ; The First Cause must be self existent, timeless, nonspatial, immaterial since the First Cause created time, space, and matter and he is without limits and is infinite . The first cause of anything that becomes finite, must be infinite or outside of what is created much like a Painter is to his Painting. The First Cause would have to unimaginably powerful to create the entire Universe out of nothing and supremely intelligent to design the Universe with incredible precision . The Cause would have to be personal in order to choose to convert a state of nothingness into the time-space-material universe, for, an impersonal force has no ability to make choices. These characteristics of the First Cause are exactly the characteristics ascribe to God and they are NOT someones religion or subjective experience...rather they are drawn from the scientific evidence which IS our reality .
So, its impossible that there isn't a personal theistic Creator based on what we have as effects. Heres a very brief rundown of the alternative to God NOT existing :
1. Non material entities such as our personality, consciousness, will, emotions, love, reasoning, logic, and abstract thinking....all derived from materials such as rocks/dirt/planets/and hydrogen gas (atoms) .
2. A Universe which has a great many examples of intelligent intervention, came from Nothing by Nothing for no reason whatsoever.
3. Informational messages as found in the specified complexity of the DNA Molecule which tells a cell how to form and how micro biological systems are to be constructed...came from Nothing. They just popped into existence from nothing then proceeded to be a blue print and Builder of a complex Cell so busy and intricate that its been related to the infrastructure of a major U.S. City by Biologists (atheist and non atheist alike) .
4. There isnt a shred of purpose or reason to this life ...even though we as Human Beings contradict that every day of our live by how we live.
5. We are just a little above the animals of the Forest in value and dignity., and essentially are on the same order of importance as an earth worm.
6. Everything is purely accidental including morals and ethics...and it is silly to hold to such in any form and to any level. There is nothing that is absolutely and objectively wrong therefore...and it doesnt even make sense calling the extermination of 6 million Jews and Christians in Nazi Germany 'wrong' , for it is just opinion to do so if morals are accidental and there is no higher objective Moral Law Provider (God) .In fact, there is no objective reason for Mother Theresa being 'better' than Stalin or HItler.
7. Everything is utterly futile by placing any value on it, for, nothing in an accidental Universe could have any deliberate value. Therefore, we have no intrinsic value ...and we are no different than the Bird in the tree who struggles to survive in a valueLESS reality. A human baby we see arrive into the world is completely void of any value whatsoever and if it dies there should be absolutely no anquish or sorrow shed. In a futile world, there is no room for regret .
I could on..but suffice it to say that carried to the end....belief in No God (atheism) is THE most illogical unreasonable and devastating to society faith-based Religion ever to be devised by Man.