Originally Posted by sewjoyce
Needles wear out. The points get dull and can damage your fabric and can cause the machine not to work as well.
Well said. A dull needle will also put a bigger hole in the fabric than necessary. I don't change mine as often as the experts recommend, but I always know when I am past the point. I can actually feel and hear the difference.
Old needles can be used for paper pieced perforations.