“It could certainly be argued that there should be a WW I Memorial.But,at most,only one of its honorees will ever see it.”
My father and father-in-law were both WWII vets but neither had the privilege of seeing the WWII Memorial in DC. By the time it was eventually built, neither was able to visit it.
By this line of reasoning the Vietnam Memorial should never have been built because every one whose name is on it will never see it, all having died while serving their country. You don't put up memorials for the ones who lived through it, you put them up for the generations to come so they will remember.