Oil Change before Storage

I am confused. Why is fresh oil better at eliminating the issues water and acid can cause than old oil? Does old oil somehow create more moisture? Even after it's up to operating temperature while transporting to storage? And if so how much? Explain to me how old oil creates more condensation than new oil. Unless a critical piece was left out that after you change it you don't start it creating heat and thereby moisture. But if you have to drive it to storage it seems like it makes no difference. Especially 5 months on oil that only has 1000 miles on it. Seems like a total waste of time, money and resources.