I belong to the Enough clearance" crowd. In fact on those occasions where I have watched them change the oil, Even the pro's did not lift it, just slid under on a crawler.
Only once has it been "Lifted" sort of.. When it tossed half the serp belt (yes half) I drove it over the top of a "Grease pit" so the workers could change it more easily.. and they did too. Of course in that position they did not "lift" the motor home.....they lowered the floor.
Home is where I park it!