Could RNA start life?

The analogy of RNA as some sort of storage "device" is irrelevant. Nature didn't create anything, but rather RNA resulted from the accumulation of proteins and phosporus bonds in a complex structure which resulted in RNA. It's not as if these proteins became RNA with the "intention" of becoming living. Complexity is a natural result of trillions of random and complex combinations. Life could also potentially be the result of other unknown combinations which form from other elements. It neither proves nor disproves your position of theism.