This is a little unfair. He might as well refer to getting rid of pencil and paper. There's nothing wrong with using a tool that serves you well. Typically upgrades today consist primarily of bloated user interface changes that just confuse everyone who's been using it and require twice the memory and CPU power that you have. Who wants that? Unless you want to buy a whole new machine, which is a colossal headache, and for what purpose? To be "hip" with a new version that still doesn't do what you want it to do?
Heck, I still run Windows 98 on one machine and it works just fine. (I tried to upgrade it to XP but the hardware didn't support it.)
I like to use my machines as long as they are useful. I have one machine that's twelve or thirteen years old and still does exactly what I need it to do. "Obsolete" to me means something that doesn't fit your needs anymore. If it works fine, don't fix it.