Heh, nice response
Anyway, here's when I wish there was strikethrough vBCode:
When going back to edit a post (for corrections) but still wanting display what was originally written for the sake of completeness and as a 'historic record'
... and then of course there's the 'why not' argument... It adds functionality, and reportedly its not difficult to do (according to posts on vBulletin forums). Surely most people will never use it... but for those who make far too many errors and edit their post far too many times, perhaps they, like myself would appreciate the feature.
Well there you go... whichever... although in hindsight this perhaps should have been a PM.