To each their own. I'm not here to argue or change your view point and I respect your opinion however I want to make a few quick points.

Most people don't even think about changing their fluids until the transmission starts to act a bit funny. Most of the time at this point a failure is inevitable and it was already too late to do a fluid service.

The failure caused in my transmission was fluid related. The F Clutch Piston was worn(from 100k+ fluid), which in turn caused a leak, which caused the failure of the sealing surface of the piston.

The fluid spec'd for these transmission only has a 3 year shelf life from the manufacturer in a bottle!