Bigfoot said:Resale value enters in to my thoughts. Even if to my heirs. Dents and fading do as well. A brick house doesn't suffer those two blows. Personally, I like the idea, and the look on some of them.
In 1981 I had a Morton Building built with their standard grade of painted sheet steel. Today the roof is finally starting to show the Galvanized coating (primer under the paint) with no rust. Sides are dirty and not shiny any more, but paint is still covering the surfaces. No dents are in the metal. Stay with 26 Ga. or smaller and you don't have to worry about dents (opinion). Aluminum siding dents, vinyl siding gets holes blown in it by hail. Wood rots. Steel just sits there and does it's job, maintenance free. Just had the roof on my house redone. If I didn't think the 30 year asphalt-FG Timberline shingles would be there when I am pushing up Daisies, it would have been a steel roof. But at 78 I think the shingles will win the race. ;-)