I thought it was just me who had developed this desperate need to walk everywhere. Then I heard Will Self talking about walking from airports to the centre of cities and how it was a need to reconnect yourself with your surroundings.
But there's more. When I leave the office I can either take a short, unpleasant walk to King's Cross to take the tube or a long, pleasant walk to Highbury & Islington and then catch the overground home. I've lately come to the conclusion that the reason I don't take the former is because it's in the wrong direction. Does something happen to you when you reach a certain age that means you can no longer tolerate not heading where you're going? If I'm forced out of my way because of some kink in the transport system I get crosser and crosser and crosser. If I can take the right heading I'm happy, no matter how long the journey is.
I think Paul K. Lyons realised this before me. He's written about what it's like to walk across London in a more or less straight line south to north (which takes him past the end of my road) and east to west. Good to know I'm not alone.