Prolly cuz I'm not stupid enough to drive my car off-road if it ain't capable of handling the terrain.
I have taken appropriately lifted vehicles off-road many times, though, and many of them weren't big ass lifted trucks because that's rarely what's actually needed. Oh, and even if you do need said lift, a truck ain't even the best vehicle for that purpose.
But go on, keep pretending the .01% of truck owners actually travelling through 4ft of mud to get to and from their farm are the normal use case for trucks.