Why restore an antique or vintage piano?

"Restoration is required in order to keep the unique musical heritage that each antique or vintage piano holds alive, whoever its maker might have been. Any well-made and well-maintained piano will continue to work, even after many years, but will not be able to give proper satisfaction when played once its actions are worn out.
Therefore one must focus on the key factors which could justify investing in a complete restoration: Sentimental factors: What does this tarnished and out of tune old piano mean to you? Musical factors: Is its intrinsic musicality going to meet your expectations? Aesthetic factors: Would its simple beauty compliment an already furnished room? Space factors: Do you have room for such an instrument? Historical factors: Was it made to a modern or historic design? Financial factors: Will the expense be justified by an increase in value? Pianist’s factors: Is the register sufficient for a wide repetoire and high-level playing? Your initial responses to these questions are completely personal, but clear and reasoned answers can only be arrived at with technical and historical information provided by specialists in vintage and antique pianos who can fully appreciate the sound of the instrument. As a general rule, it is essential to check the musical potential before beginning detailed restoration work, in order to make sure you appreciate the balance between the musical result and the financial cost for that particular instrument. Pianos from well-known makers with a major history of production hold their market value, in contrast to new pianos, but they must be maintained in perfect condition."