Gee -- that's funny ...
I use many PC's both at work and home, some old and newer, and I can tell you that I have an old Dell Dimension 4100 that has three (3) Western Digital hard drives in it and all run well. The oldest one is from 1996; the second from 1998, and the newest from 2000, when I bought it. One of my work PC's is running on Windows 2000 with hard drives installed in February 2003. The latest hard drive status shows only one "cautionary" section for both the hard drives: "spin up time." This is after 10 years of use. Of course, I have all my data backed up to external hard drives, and system images of all the critical PC data.