Unlike horse and buggy and cars, I don't believe machine quilting is a modern replacement for hand quilting. It is another method, probably a method used more often because of the time element. It also has its own look and designs. It seems to me to be very much like hand embroidery and machine embroidery. Machine embroidery is not a replacement for hand embroidery, but another method. Machine embroidery creates a look unachieveable with hand embroidery and hand embroidery has its own uniqueness. The same analogy can be made for machine knitting and hand knitting. It Is wonderful that we have new tools and methods that add to choices we have to create quilts. That being said, I wouldn't give up my rotary cutter, mats, and rulers. When I first started quilting, the batting choices were cotton or polyester. The first cotton batt I used had seed remnant lumps in it. Now we have a wide variety of batting choices.