Trailers are just boats on wheels, they just sit till you want to use it, and then you throw money at it. I've been lucky with relatively few problems that I cant fix myself , but I learned the expensive way to replace the tires no less than every three years in AZ. even covered, they don't last. The damage that is done to the side of an aluminum trailer is as expensive as body damage to a Bentley or Rolls I would guess.( never had one of those cars and never will) But, when the winds blowing, rain pouring down, or heavy wet snow is falling, they are worth their weight in gold for a good night sleep.