Because to the majority of people, old cars are unreliable, impossible to fix, dangerous gas hogs. And to many folks in the scrap-metal business, an old machine isn't a worthwhile thing of beauty with a history and character, but just another few easy bucks...that's why.
4 doors are less desirable to most collectors for some reason, even if that is a ford it's a sad fate to sit and rot.
Ditto to both comments.
Parts are hard to next to impossible to locate, very costly to restore ven if you have the skill and tools to do such.
To folks in the scrap-metal business it`s just another fist full of dollars in parts.
And, unfourtunatly it`s a "four door"; which is not the most sort after restoration project in the eyes of many.