Thanks everyone for the replies. Although it wasn't my intention to elicit requests for me to stay, it did make for very pleasant reading!
Glad it opened up a bit of a discussion about how others view the forum (and forums in general) as that's kind of what I was pondering, whether I have a very different perception of what makes this virtual community tick. The pub analogy was a good one and so too the advice about steering clear of Soapbox; it's just not for me.
I think I've had my crisis of faith. I will hang around for a while but only in the sections that are most relevant to me (Race, Commuting when I'm up to it! and Cafe). I use the technical section when I need to, but don't have the urge to post much as there are much more knowledgeable folks out there than I.
Andywrx and Kirstie I hope you both stay around, you definitely both add value to the forum.
Finally cheers again for your words of encouragement, it's really made me think twice.