Obviously, the problem of evil is one of the greatest challenges to traditional theism. If suffering exists, how can an all-powerful and all-good God exist? Doesn’t evil make God’s existence unlikely?
One response to (this version of) the argument from evil says something like the following:
“Okay, let’s grant that God’s existence is unlikely relative to the existence of horrific evil in the world. However, it doesn’t follow that God’s existence is unlikely, all things considered. In other words, relative to all that we know about the world, God’s existence is not unlikely. There are also arguments FOR the existence of God.”
One problem with this response is that many arguments for a god are not actually arguments for an omnipotent, omniscient, and omnibenevolent God; omni-theism is the target of the argument from evil.
The second problem with this response is that it sort of ignores the fact that there are also other arguments against God’s existence, which means the argument from evil is NOT the only argument against God. So, we can’t just look at arguments for God’s existence and ask whether, cumulatively, they outweigh ONLY the argument from evil. Even if they did outweigh the argument from evil, the other arguments against God’s existence might very well tip the scales back in favor of non-theism.