Mine is 40 years old and still going strong. It does beautiful FMQing and easily sews through layers of denim. It was my main machine from 1975 until about 5 years ago but I still sew with it. My DGKs love sewing on it. Do you have the red case and everything that it came with? My vote would be to keep it BUT then, I am prejudice!
My daughters learned to sew on it, as well as my grandchildren.