During my time in HM Forces (Royal Artillery) I drove hundreds of vehicles from tracked to Lightweights, all showed signs of use but none were unroadworthy. First parade servicing involved a visual inspection of tyres, lights washers, wipers etc. All vehicles had dents, scrapes, numerous layers of paint and subtle mods to make life easier for the person actually using them. However we the drivers, like ALL road users were responsible for the vehicle being roadworthy and safe to be on the road, if you weren't happy you reported it and the vehicle was VOR until rectified. In the military scene we see increasing amounts of shiny as new vehicles which bear little resemblance to those vehicles when actually in service. It is all down to the individual, they are the owners after all but it sometimes resembles a classic car show out there.
By all means keep it roadworthy and preserve the vehicle but to erase its history to the point of polished wheel nuts is not exactly portraying them as they were. I would much rather see a vehicle showing its past than a sanitised version that bears no resemblance to reality. Each to their own as they say