Inside your DSLR

I was always a bit miffed with what I thought to be a slow shutter speed for my camera, and to find out that camera bodies often have a finite number of images they can snap before it is time to upgrade to a new one. Then I saw this.

[youtube]http://www.youtube.com/watch?v=fG5QedhroYQ[/youtube]

Ask any mechanism to perform a quick, complex action many, many thousands of times, and of course it will deteriorate over time.