IF I was to put my bike away for winter storage, I would change the oil before the riding season due to condensation.
Maybe for mechanical reasons. Like you had to re-tap the plug threads, or some other mechanical problem that may have contaminated the oil. For instance, I had buddy who left an electric fuel pump on and the float failed in the carb. (drag car) Filled the oil pan with gasoline. So we changed the oil a few times on that one.