What would I miss moving away from SE London? Or more specifically Greenwich? Dunno really, depends where I moved to. Much as I love the countryside I'm a city boy raised in an urban environment and this where I feel most comfortable.
When I lived in Cornwall for a year it struck me just how dull the countryside is, especially in the winter. Looking at an endless green vista is small compensation for the area having no vibe whatsoever. It was just so quiet and lifeless.
I suppose I'd miss the inner city vibe, the Thames landscape, obviously my friends and the multi-cultural neighbourhood which I really enjoy.
I've visited many parts of the UK including Yorkshire & Derbyshire and love it but they are places to visit and it's always good to return home. I suspect living in the country may drive me loopy but I could be wrong, after all, I am now of a more senior age...