Flying isn't what it used to be. Used to be gentlemen wore suits and the ladies wore dresses. Today I wouldn't even refer to the passengers as ladies and gentlemen. Several won't even bathe before boarding an aircraft. In short, the air stinks! The risk of catching some disease is high. A huge reason I got my RV is because I know how clean public places are, like airplane cabins, hotel rooms, restaurants.
We can bring it all when we go in the RV vs flying as well. How disappointing to make it to Yellowstone and have forgotten your binoculars or other important item. My RV is packed for adventure, so nothing is left behind. I can even bring a firearm. Try to do that on a plane.