I have never been able to wear out a Technics keyboard or organ. My old KN5000 is still going strong at a friend's home. So, I don't think it is essential for me to buy a back-up keyboard. But, I would be devastated if I lost my KN7000. I do find that I don't play the KN7000 as much as I played in younger years with the many Technics products I have owned. It is not because I like the KN7000 less. It's just that my lifestyle as I get older seems to keep me away from making music. My KN7000 looks like it has never been used. But, if I ever lost it I would pay most any premium price to find a replacement.