Thanks. That’s a picture that should impress anyone.
About 25 years ago they used to have fires in the nicer suburbs of Dallas that would burn whole rows of wood shingled houses (most of the neighborhoods had restrictive covenants requiring that roof). Then one fire burned a row of houses but stopped abruptly when it got to a house that someone had re-roofed with conventional shingles. With heavy press coverage, it didn’t take long before the covenants were invalidated, and most folks replaced their roofs. The problem disappeared.
Here on the San Fran Peninsula, most houses had gorgeous wood shake roofs. Same thing happened with the Oakland Hills fire. You can still put on a wood shake roof, but their lifetime is cut from 20 years to 10 with the required fire impregnating chemicals.
Most houses now have asphalt composition with some tile and a very little bit of slate or metal.
We reroofed in the late 80s with shakes. We reroofed again a couple years ago with 50 year asphalt composition. It still break s my heart to see asphalt on the roof. Yuck, it just isn’t natural.