The Lifespan of an LP?

I only have about 300 records.  They have been played quite a bit and I can't tell if the sound has changed.  I play them on this beautiful piece of Americana:  http://www.victor-victrola.com/VIII.htm

Quite fun to listen to the original "Take the A Train" on the Vic and then follow it with a modern digital version on "the big rig"!  Fun is what it's all about.

To the OP:  Some of those records are nearly 100 years old and they still sound pretty crappy but engaging.  Oh yeah, I change styli (needle) frequently and if I see a little corrosion...some warm water and brillo takes care of that. I must have about 150 "needles" and yes they are sharp as a needle. Almost.

Regards,
barts 

I still listen to LP's that I bought 50 years ago. I did damage a few with cheap turntables and cartridges, but with good equipment and care, they may outlast you.

I use Last record preservative. Don't know about vinyl wear but records sound a touch better after treatment. Last has been proven to be a good stuff, I heard.

A long long time.
I stole my dad's collection when I moved out in 1975.  I remember he playing them on a Magnavox phono console in the late 50's.  I played them till 2010ish.  Those records saw a bunch of systems  Always sounded good.  Even when played before or after newer pressings.   

Chakster is right and practical for life. Unless you listen to the same for ever, they easily outlast us as I have vinyl from others lives that are still mint even though played dozens of times.