Well as Americans expand they need bigger and bigger vehicles.
To impress people they don't know with things they don't need.
The Original Ranger was a good combo in its day minus the I beams, and what would it be capable of now with todays technologically advanced motors.
I had the new 07 GMC RCSB, and I meet a guy with a 74 Chevy RCSB. He transplanted the same motor, tranny, and electronics into his truck as mine. He was alot faster, and got much better mpgs then I could dream of. The damn truck would get 25mpg hwy. I guess the larger larger rims I had "17's stock", and extra 1200 my truck weighed made a difference.
I personally believe that every truck company builds things to look good on spec sheets, and ignores how 95% of people just drive there trucks. For the people who use the 1/2 tons to the max theres 3/4 tons. I just need to haul a few hundred pounds from home depot.