After I'd planned to write a post about doublewide manufactured homes, I came across an article: Tornado Deaths Raise Questions About Mobile Home Safety
If you listen to the news, it does sometimes sound like tornadoes target mobile/manufactured homes but the problem is that some of the homes aren't built to withstand high winds. Some (most?) of them, if the winds hit them at 90 miles per hour, the home would be destroyed, while someone inside an old Pennsylvania stone home might glance up from their newspaper and say, "gee, it's windy tonight."
The article addresses some negatives - and positives - of manufactured/mobile homes.