At What Point is the Needle Damaging Records?


I have used my Denon 110 between 1-5 hours a day for the past three and a half years, and lately I noticed the highs are beginning to sound a little muted. Could I damage my records by not replacing the cartridge right away?
jmoog08
I thought a typical stylus lasts about 2000 hours and it usually outlasts the suspension. Is this not case?

I could be wrong as I'm going by long term memory. I looked around the net, and Shure says about 1000 hours, and people were saying 500 hours or more on VinylEngine. I think some times they used to have timers that went to 999 hours from what I can remember. They're aren't all the dealers like we had in the vinyl only days, that used to have a good microscope to check to see how it actually was worn. I wonder were those good microscopes went? They might be in storage somewhere being wasted, or in someones collections that knew better than myself. Links to what I found.
http://www.vinylengine.com/turntable_forum/viewtopic.php?t=24807
http://shure.custhelp.com/app/answers/detail/a_id/4135/~/stylus-wear-and-record-wear
Jmoog08

Have you tried demagnetizing your cartridge before assuming stylus damage?
Here are a couple of links to those old stylus microscopes some dealers had in the 70s. Mcintosh dealers had to buy a lot of gear back then. The Wild Heerbrug was $4000 back then. That's about $17,000 in today's dollars. Audio Classics said theirs cost them $6800 dollars. I can't find what the Shure microscope cost back then. Links.[http://www.roger-russell.com/phono.htm] [http://www.shure.com/idc/groups/tech_pubs/@global_managed/documents/webcontent/us_pro_sek-2_ug.pdf]