Of course, what this usually ignores is "...and live somewhere where you can actually safely walk for an hour".
I am living in Canada. It's winter and it is wet. Going outside means a 5 min ritual of changing into outside clothes (because it is wet) and wearing boots, walking and doing the reverse 5 min ritual. I love walking but very annoying these days.
More seriously, the ritual is a key part for some, it changes the focus. (But may be a nuisance for others, of course.)