Agree with this and this is my main concern. As good as Derek has been for us and as stable as we've been I believe he has taken as as far as he can. If there was a suitable replacement available I'd be much less bothered about him going. But I am bothered because I can't see us replacing him with anyone better.
That explains a lot. Don't worry about it, Rocket. The Donstalk admins, mods and posters all support you.