The Lifespan of an LP?

Like Inna,
a Nakamichi cassette player becomes my musical source to cut down on my use of records.  I also 
Place Last record preservative on 
all new records.  Cd’s are also 
a source of my music.

When we were kids and the record would skip, someone told me to put a penny on the head shell. I'm sure that helped wear out the record! 

jnovak -- As an audiophile even back then, I'd put a dime on the head shell instead. A more expensive solution but less weight.

L.A.S.T. [Liquid Archival Sound Treatment] is a fluorocarbon-based record preservative and lubricant and leaves no discernable residue, adds no noise, and in my experience has rescued many a garage-sale disc from the trash. overall noise levels dropped by at least a record grade, formerly distorted records became more listenable. i am no chemist but it is claimed to add more elasticity to the top layer of molecules [supposedly 10 deep] in the vinyl groove, which help to reduce distortion and noise. one warning, NEVER leave the bottle cap off of it, as it will evaporate and it ain't exactly cheap. 

The Library of Congress did a study of archival audio storage in the 1980s. In this study they concluded that laminated media like tape and CDs had lifespans that were measured in years and a couple of decades, depending on storage. Non-laminated media, like LPs and the stampers that made them (if stored properly) will last decades and well into a century. I have LPs from the early 1950s that play fine- and are now 70 years old!