All of us with tall vehicles & do extensive travelling are going to experience battle damage at some point or another. Backing into a site the frequency of damage happening is greatly reduced by having the DW get out, communications in hand, & do the spotting for you.
Bullheaded "I can do it myself" will cost you. A CG is not a warehouse yard for semis where there are no height issues & the distance between parked trailers is known. Semi trailers are built to take bumps into loading docks. Most RV trailers are nothing but flimsy plastic. The trees will win everytime.