"While it is not possible to prove (or disprove) God’s existence, what is provable is what happens when people stop believing in God.
1. Without God there is no good and evil; there are only subjective opinions that we then label 'good' and 'evil.' This does not mean that an atheist cannot be a good person. Nor does it mean that all those who believe in God are good; there are good atheists and there are bad believers in God. It simply means that unless there is a moral authority that transcends humans from which emanates an objective right and wrong, 'right' and 'wrong' no more objectively exist than do 'beautiful' and 'ugly.'
2. Without God, there is no objective meaning to life. We are all merely random creations of natural selection whose existence has no more intrinsic purpose or meaning than that of a pebble equally randomly produced."