Does a 'God' exist? Eventually you just have to go to which side has more hard, scientific evidence. Nothing can has or will happen outside the laws of physics, this is a basic fact of life. Until someone shows me hard scientific evidence of a god then I am an atheist. Also on the basis of the argument of evil; the theist's argument is that 'god gave us free will' but if your argument against the Big Bang is cause and effect then you believe in cause and effect and therefore not in free will. That leaves two options :
1: there is no god
2: your god is not omni-benevolent
Due to god designing the world to create evil