Back in the 1970's, my mom had a 1973 Ford LTD wagon similar to this.
I was just a child back then, but I do remember riding in it, especially the long road trip from Virginia to Florida one summer.
It was a nice car and had a comfortable ride. That's all I remember. but I agree to what others have said.
It's popularity has dwindled since the 1970s as a result of many factors like U.S. culture and space, size, and power, but one of the big factors was the first introduction of the mini-van in 1984 by Chrysler and then followed by the SUV in the late 80's and early 90s.
Families these days have more things to lug around so they need more space and a more powerful engine to get around and therefor the station wagon is like a dinosar of the past.