Provided that humanity has addressed this issue with rationality and assuming it's been given enough time, there should be an answer to the following questions:
Why do most people choose to believe in unnatural powers and divinity?
Are spiritual people rising or decreasing in number with time? Is this explained by some philosophical or scientific argument?
Will such beliefs be abandoned at some point in the future? Again, could philosophy or science have a role to play?
If there is no definitive answer beyond any reasonable doubt (for instance about God's existence) is it because we are not being rational enough or because there hasn't been enough time to discuss or investigate?
I'm not questioning philosophy or science here, but rather our capacity to address these questions.
Eventually some religion could emerge whose God created everything in such a way that he/she/they or any proof of their existence could not be found. In which case science would have no capacity to give us definitive answers, only philosophy, if we are smart enough.
I think everything boils down to "Are we capable of resolving the controversy? If so, why hasn't it been resolved yet?"