When I started quilting, I'd heard about chain piecing, but didn't really "get" the value of it. In the first quilt I made, there were parts that could have been chain pieced, but I didn't know how. The next several quilts were too random to chain piece. Even Liam's quilt last year could have been chain pieced and I might actually have done a few squares that way. I don't remember.
The next quilt that I plan to "cut" for takes this efficiency thing one step further with strip piecing. I know I don't need a new project, but it's so much fun to start new things.