I was a Symbian/EPOC32 user since my first Psion 5 when it was just released (wish someone would make a redux of it with top-end specs!), but two months ago switched to Android (MyTouch 3G Slide). I can hardly begin to describe how much more enjoyable it has been than my previous Nokia with S60v3. More useful, integrated, expandable, intuitive, consistent and just plain more FUN. Google Navigation is fantastic and the developer support is astonishing...and astonishingly easy to access through the Android Marketplace. My phone calendar and tasks are synced continuously with my Google Calendar (which recently received a major facelift) and apps are being updated all the time...and Android notifies me of their availability. I was a staunch defender of Nokia but now feel like I was living in the dark ages! To be fair, I have never used any of the touch versions of Symbian, but at this point it would take a lot to make me switch back to Nokia. I do wish them well, and the N8 looks like a step in the right direction.
Your post sums up my experience totally. I too came from S60v3 (E72) and while the phone could do everything the other phones can, the experience can be horrible. I purchased a Nexus One in June and I am extremely happy. If MeeGo can deliver then I will think about returning to Nokia.