- (Premise) No life centered on love of someone who never exists is a flourishing life.
- (Premise) Some people lead a flourishing life centered on love of God.
- Therefore, it is false that God never exists.
- (Premise) God either always exists or never exists.
- Therefore, God always exists.
One thing that is interesting in this argument is that it makes it harder to be a "sympathetic atheist/agnostic"—someone who, while not believing in God, can positively evaluate the lives of theists.
It's also interesting that there does not seem to be a parallel argument for atheism. One might try:
- (Premise) No life centered on the denial of someone who exists is a flourishing life.
- (Premise) Some people lead a flourishing life centered on the denial of God.
- Therefore, God does not exist.
This points out an important asymmetry between theism and atheism. If theism is true, one's life should be centered on theism. But if atheism is true, one's life should not need be centered on atheism, but on valuable things like friendship and understanding.