Too frequent oil changes for some, just throwing money away, it's not helping the engine last longer, esp if your using full synthetic, just going down the drain. Manufacture Intervals or right before winter storage is all you need.
Bought my CB500X of an Amsoil Engineer who did frequent oil analysis, and one on the bike when it hit 1000km after changing to Amsoil. He had a few bikes before and lab tested all the oil. He found at even manufacture intervals, the oil still had over 70%+ of life left. He had two cars on his driveway. each at over 300,000kms! I was blown away when he told me he only ever did oil changes every 50,000 or so kms!! He tested the oil every change as well. Oil has changed a lot in the last few decades, so have engines, our minds are staying the same.