I can only imagine these quilts are like a bad flashback for some quilters, who may remember working with double-knit polyester. Apparently, it wasn't the easiest material to use. It is stretchy and dense making it tricky to piece and difficult to quilt. That's why so many of them are tied.
In a way, it's like a love hate relationship. Since I'm the guy who can't thread a needle, I think of these quilts more in terms of quilt history and art history, and they certainly hold a unique place in both fields of study. The 70s quilts intrigue me because of the way quilters were using color. Even the pastels were technicolor! The fabrics are also a lot of fun. Check out the detail of the double-knit clown fabric. Now, how can you look at that and not smile?