Very, very good point.
Every time I type the address into the URL bar, I have this funny feeling something's going to be different (or the board won't be here at all)... it's a relief to see that not everything has to have a new version up every five weeks.
However, when it comes to functionality and the constantly-evolving nature of forum technology and the Internet in general, CF could definitely benefit from an upgrade. If there's a way to keep the colour scheme and/or the major elements of the layout intact while still upgrading the board for the changing times, then I don't see any reason not to go forward with it.