for whatever it's worth,i'll add by 2 cents worth.
for 7 years we towed out 17' casita
with a '01 tundra. covered the lower 48 with it. burned up one transmission.we also found ourselves in situations that more power and 4wd would have been nice.
for many years used a 2wd backhoe (tractor) and could'nt see why anyone would want 4wd.
it happened that we wound up with a 4wd.found out it was much more versital.
about a year ago, the tundra hiccupped and we decided to look at a new dodge. several of our neighbors have them. we wound up buying a r3500 4wd diesel. lot's of power and weight
. the mileage is better than the tundra and far more comfortable.i find myself wanting to get back on the road. something i had been getting tired of. guess part of it is old age. (we are in our 70's now)