Atheism has two big problems with God: one based on experience, the other based on biblical revelation.
The argument from experience goes like this:
If there is a God, why does He allow so much evil? Why doesn’t He step in and do something when nine people are shot up in a church? Bad things happen, and they even happen to people who claim to be His. Why do bad things happen to good people and God does nothing? Because there is no God.
For example, Richard Dawkins says:
“In a universe of electrons and selfish genes, blind physical forces and genetic replication, some people are going to get hurt, other people are going to get lucky, and you won’t find any rhyme or reason in it, nor any justice. The universe that we observe has precisely the properties we should expect if there is, at bottom, no design, no purpose, no evil, no good, nothing but pitiless indifference.”
Since nothing happens to make justice, there must not be a god.
The argument from biblical revelation goes like this:
The God of the Bible is constantly judging people. He even wipes out foreigners, women and children. God seems to get much glee out of judging people He doesn’t like, as He has deemed them all to be bad. How can anyone worship a God so angry at people who aren’t listening to Him? This is not a god worth worshiping.
Richard Dawkins again:
“The God of the Old Testament is arguably the most unpleasant character in all fiction: jealous and proud of it; a petty, unjust, unforgiving control-freak; a vindictive, bloodthirsty ethnic cleanser; a misogynistic, homophobic, racist, infanticidal, genocidal, filicidal, pestilential, megalomaniacal, sadomasochistic, capriciously malevolent bully.”
Since the God of the Bible is more evil than I am, I will not worship Him.
Now, here’s the thing. Richard Dawkins is one guy who has two problems with God
1) God doesn’t judge evil enough
2) God judges evil too much
Unfortunately for Dawkins, and others who use both these arguments, you can’t have it both ways. Either God judges evil too much or He doesn’t. But you can’t criticize God for not judging while criticizing Him for judging.
This is not logically consistent. It seems to me Dawkins is determined to not like God no matter what God does. If that is the case, that’s fine, but at least recognize that you are the one with the problem, not God.