aka the best kind
Not necessarily true at all. Here in California you can often find older homes with Redwood siding that's irreplaceable. It's not just that it's Redwood, it's that it's old growth Redwood from trees that were a couple hundred years old. That stuff doesn't exist anymore. But beyond that, they generally (not always) are very poorly built, and unbelievably wasteful of material. Roof structures are where they cut the most corners, it's rare to see an old house that doesn't have a very serious sag in the roof.
I've rebuilt a lot of old houses, I've never worked on a single one that I thought was well framed, they simply didn't care about that back in the day.
