Your quilts look great. I too do my binding that way. It has never made sense to me to handstitch a binding on a quilt that has been completely stitched in all other areas on the machine. The quilts that I make get a lot of hard use and many washings and machine stitched bindings stand up better. I use all sorts of decorative stitches on them and sometimes even a straight stitch! They all work out just fine and as these quilts are not going into a competition of any kind, no one else even knows.