Not "close-minded" at all.
While these type vehicles (so called RV's by some) can transverse more obstacles than the properly setup 4X4 trucks with an RV on it we drive today, they still have many manylimitations. Deep water, too high of a boulder, too deep mud, too steep for them to climb, and gobs more. All they can do is a little more rugged outbacking than many of the "offroad" capable trucks in production today at many times the expense and cost. Still no comparison to a track driven vehicle. If these are your choice then get one as you are only getting older by the day!
BTW, as a poster stated, these are for 3rd world booney travel and hardly needed for nearly all of North America.
Hint! The grass is always greener on the other side of the fence until you get there...