How many times have we had to deal with this strawman argument? Over and over and over again. I am now very tired of answering it, so maybe I (and you) can use this as a handy reference.
1. Just because I don’t believe your answer (god) doesn’t mean I need another answer. All that is required for atheism is not believing in god and we have no reason to. It would be perfectly fine just not to believe your explanation and so long as there’s no evidence for your explanation that is perfectly reasonable. Saying: “Look at this perfect universe! God must have done it!” is not only ignorant of the hostile nature of the universe in which we live, but it is a perfect example of the argument from ignorance and the argument from personal incredulity.
2. Given the sheer scale of the universe (13.75 billion years old, hundreds of billions of galaxies each with hundreds of billions of stars) even sheer chance has pretty good odds at that scale anyway.
3. There is pretty much no instance in which ‘random chance’ is involved in cosmogenesis, abiogenesis or evolution.
3a. The fact is we don’t know that much about the origin of the universe yet. There’s some rather difficult and profound questions around it. It seems, though, that the fundamental factors that constitute the natural laws of the universe are interrelated and may be confined to a relatively small range. There’s also the fact that if the universe was not one in which we could come about to think about it, we wouldn’t be here to think about it. You must also consider that we formed to fit the universe in which we exist, not vice versa.
3b. The planets and stars came together through gravity, not chance. It is no more chance that these bodies formed than it is that a released stone drops to the ground. This is also the case for the formation of elements in stellar cores and their interactions. These are fundamental qualities and they interact as they do not randomly, but according to conditions and opportunity.
3c. Abiogenesis is not a matter of chance but a result of chemical interactions under specific circumstances. We have problems recreating it in a lab because of a matter of scale and time. Not because it’s impossible. Szostak’s work is some of the best on this. Really, replicating molecules are just a matter of inevitable chemical interactions – given enough time, the right conditions and the opportunity.
3d. Evolution is not random. Variation is semi-random due to mixing of genes. Mutations are somewhat random. Selection is not. The faster lion catches the wildebeest, the slower wildebeest gets eaten. That’s deterministic, not bloody random.
In short, shut up.