Thank you all.
I have never had the ferrule become loose. Never fly apart. I only have kept the rods that are stiff as possible. Never pulled with the rod while on a snag. Drag is set for 4# or 6#Lines correctly. I do not catch several big bass each day or year.
I can not tell the difference in weight or casting effort between all my spinning, stiff, 6 rods. All between 6' 6" and 7' 6". I cast with 2 hands. That reduces wrist pain to nothing. I did buy what I thought was a NORMAL 9' spinning rod. It is a light duty salt water rod I feel the weighta little. BUUTT The tip speed does not toss my standard 1.5" Rapala any farther than a stiffest 6'6" 2 piece rod. Same reel & 6# Braided line on both spinning rods. That 1.5" Rapala weighs nothing.
So I come up with heavy lures Can use the tip speed better.