i am sure you would like a more out of the box explanation
but could it be that you feel more motivated and happy in the trees (whatever reason that is?)
i personally feel the other way
i also feel motivated walking without a route when backpacking
i love cities, museaums and buildings
i love archeology and pyramids
i love to see what humans create and what we are capable of
i just dont care that much about rivers, mountains, volcanos, forests and stuff like that.. i get bored hiking in those places
its just not my thing.

For every person who reads this valuable book there are hundreds of naïve souls who would prefer to have their spines tingled by a sensational but worthless potboiler by some hack journalist of the paranormal. You who now read these sentences join a small but wiser minority. Martin Gaardner (Psychology of the Psychic)