I couldn't tell you how many times some of my range pick-ups have been loaded, Steve. I don't run them hard, generally 800-850 fps from a 4" tube and when the primer pockets get loose I discard them, as I would with any other caliber.
On another forum, I recently found a "40 reloading" thread in which a high percentage of the participants viewed the process as roughly akin to capping live volcanoes or super-gluing the hide back on a PO'ed crocodile. They weren't overly tolerant of anyone attempting to 'cloud the issue with logic' either, so I left them to their flash powder and animal sacrifices.
As in most things, moderation is key to success in loading the .40 S&W.
“Nine-tenths of tactics are certain, and taught in books: but the irrational tenth is like the kingfisher flashing across the pool, and that is the test of generals. It can only be ensured by instinct, sharpened by thought practicing the stroke so often that at the crisis it is as natural as a reflex.” ~ T. E. Lawrence