Can't add much to what has already been said. Agree with just about all of it.
Have lived here for most of 20 years - and love it. After an 8 year stint in Peckham (which was hell - no disrespect to the people), this place was like coming to the country - and the move into my last flat, the happiest day of my life at the time. After 12 years in that flat, I moved 2 minutes up the road to a bigger place.
Plenty of green spaces, beautiful trees and quiet roads away from traffic. It's like a village, but with all the amenities you would require and Central London accessible - and even more so when rail links have been improved. Friendly people (as stated, diverse community). Not many run down parts - even the council estates seem to be well maintained, and not too much crime that I am aware of. The community police officers say good morning when they pass. Not something associated with London.
There are more affluent parts of London, but I can't think of anywhere I would rather live right now.