Lol what’s wrong with walking next to an open field?

It's exposed (to the sun and the wind) and it's dull. Inviting pedestrian environments need a sense of enclosure. Can be sidewalk-abutting buildings, can be trees, can be parked cars, can be all three. And they need stuff to look at that isn't monotonous.

Fair enough, but you couldn't do 5 minutes of walking by an open field?

That kind of thing usually occurs in low-intensity suburbs/exurbs where I can just drive.

For a five minute walk? With having to start and park the car, you might not even make it faster.

Walking the small path between a highway and some fields was literally how I got to high school.