use hydraulic lifts down or up in winter for storeing

Curious as to the benefit of this. I mean RV's are really the only vehicles that can do this. All other vehicles including trucks etc all sit on the wheels with no real issues that I have heard. Obviously RV's get stored for longer periods and even everyone's here has sat at dealership for months if not years on the tires at some point in it's lifetime. People who don't take the weight off the wheels seem to have no real issues that I have heard of either. Just curious as to the advantage.