>Trees absorb minerals, water and nutrients through their roots.
>Some magical trees can walk around
>Naturally, they want to seek out the best spots to plant their roots for a while
>Nearby peasant fields are covered in manure at a certain time each year for boosting crops
>Asshole trees hang out on fields, stealing your manure
>Imagine arriving at your freshly plowed, sown and manured field in the morning, several weeks worht of work, and there's a forest there
>Get some friends to cut it down, it attacks and kills your best friend, peasant Bob
>Wood Elves shoot arrows if you approach a second time
>Appeal to local lord for troops to get rid of trees squatting on your land, otherwise there's no harvest and your village will starve
This kind of thing could start a war between Wood Elves and humans. Who was in the wrong though?