"It is critical to maintain any polished metal or Chrome surface. Just look at the anodized aluminum or Chrome metal pieces on any car. If not cared for they look like trash pretty quickly. Another negative of polished metal or Chrome is once there are scratches or imperfections they're almost impossible to get rid of." 'true 'dat but I think if you looked at the painted surfaces on the same car you'd find even more problems typically. Stuff ages and decays, but painted steal is a bit more vulnerable than polished metal, at least on the things I've owned. Then again a lot depends on the depth of the paint and the chrome, there is for sure a good, bad, & ugly on that.