My mother, on the other hand, let me *learn* to sew on her amazing 1970s Pfaff (she says they paid close to $750 for it back in 1976), and boy, is that still a sweet machine. She let me sew on it again a few weeks ago and I almost tried to pack it up in my suitcase and bring it home with me. Smooth, quiet, perfect tension, just lovely. I hadn't realized as a child how generous she was being! Now my name is on the bottom of the machine in masking tape, waiting for Mom to be ready to give it up someday.
You do have to admit, though, there's a huge difference between your mom teaching you to sew on that and loaning your machine out. My guess is, your mom was right there, making sure you didn't do anything too dreadful to her machine