Just as with airplanes, I feel the same way with automobiles.
If the road's rough, I want to know the road's rough.
It makes one more aware of the
real conditions of the road, and because one then handles the vehicle differently (knowing the road is rough), it saves wear-and-tear on the automobile itself.
If the road's rough, I don't mind a rough ride; it's reality.
Ditto for flying.
I assume that even though I've been on rough stormy seas (the North Sea in winter a few times), I've never been sea-sick, and so I think riding in a bouncing airplane wouldn't upset the gastric juices either.