Thank you for your kind view point. I absolutely agree that there is never a state of complete defrag as windows begins writing files. I have 2 interesting points to make.
1-In the old days of Norton a defrag in W3 was a single choice and it didn't take that long and it looked like it did consolidation except it was only called defrag. No one told me we now have a "consolidation" aspect. As I recall defrag once was good enough as a 2nd time was a waste of time on a 3 megabyte disk.
2-For fun I did the File defrag 6 times and each time it got shorter till the process took less than a minute. Then I rebooted and did file defrag again about 8 times. At the start it took several minutes while I wondered where did all the defrag come from after reboot. But again the process wound down to less than a minute. My point being that the old days of doing once and being done are gone. But defrag a few times may help and then -like you say- you and I defrag waaay more than necessary.
My disk performance is always more responsive after defrag which is the whole goal. I can hardly wait till I get a SSD for really fast response in defrag and opening apps.