I use a little piece of starte/stoppee fabric most all the time, this takes care of any bird nest of thread on the next sewn fabric piece. But if I don't, I don't worry about it, my thread rarely comes unthreaded, the thread cutter is a time and hand saver, less arm movement. For those that have knee lifts and don't use them, they are also a time saver and arm saver. Instead of using your right arm to lift the pressure foot, it can be doing something else while your knee lifts the pressure foot. Once it becomes a habit you'll wonder why you didn't use it before. THEN try using a machine without either of those features and you'll try & lift the pressure foot with your knee and it won't be there. We all have special features we love about our machines and are happy to pass them along.
Keep sewing
