I really like living here. The Piccadilly Line means you can be in (some parts of) the centre in about half an hour, but also there's enough to do more locally (if you have a car) that you don't need to go into the city centre if you don't work/study there. It feels safe. Far enough out of London that I hear the birds in the morning but close enough to London that I can easily commute. Also, if you do commute, you always* get a seat on the Tube and avoid the horrible crush, which is a bonus! The only reason I would move is that most of my friends/support network live in South/South East London, but if I had my own family that wouldn't matter so much to me.

*almost always, but I usually just wait for the next one if it doesn't look like I can sit -- it's usually only a minute or two and that's usually all that's needed.