"There are many people who regard walking from place to place as "dead time" that they resent losing."
Interesting choice of words. Walking is a big part of my recovery from cancer treatment, and I look at it quite the opposite from "dead" time. I view every hour I walk as one extra hour I will live, so it is very much "free" time to me, time to live that doesn't count against against my lifespan.
I walk about 30-60 minutes a day, to work and back, and while it has a purpose and a destination, I vary the route every single time and keep an awareness: what am I going to learn this time?
I love it.