Here are two corollary arguments:How can you, in all sincerity, look at the complexity of this and believe it "just happened" through time and chance?
OK, so you don't believe in God. I would think, at the very least, that you must believe in miracles.
Take a very close look at an animal that has been killed and gutted by another animal which is consuming it. Is that not beautiful to watch? Ah, God is great!
And when the killer has eaten his fill, and the maggots finish the job, isn't that just GORGEOUS? Especially on a hot summer day, when the maggots are feasting, and the scent of that rotting flesh fills the air. Mmmmm, breathe that in and rejoice in God, who created that lovely aroma for YOU.
Yes, God loved his creation so much, he made the birds and the fish and all the animals in such a way that man and woman would find pleasure in them., even when they die and decompose and stink to the point that you vomit if you get close enough.
Second argument: miracles.
Miracles have been documented and verified in non-Christian cultures. Is that therefore evidence of other gods?
Why would your God, if he wants you to believe that he is the one true god, perform miracles among people who pray to Allah, Krishna, or some other deity?
One possible answer is that Satan is at work in those cultures, trying to keep people away from following your god.
The problem with that is, some of these miracles are beneficial and healing, so why would Satan perform good deeds?
Also, how can you know for sure that Satan isn't performing the miracles ascribed to YOUR god? You can't know, can you? There's no way to discern which supernatural being is performing which miracle.
All deities answer prayers, so again, how do you reach the conclusion that your god is the one true god?
Only a religious bigot would insist that the miracles performed by the Christian god are real, and that all others are either hoaxes or the work of demons.