Everyone in Westeros has a motive. Littlefinger was a puppet master; Varys is the purest type of survivor; Cersei will do absolutely anything necessary to keep her seat on the Iron Throne. The White Walkers are no different. While Game of Thrones has focused on the journeys of protagonists like Daenerys and Jon, the Night King and his army of the dead have (finally) begun to play a much bigger role in human events. So far, however, the goal of the White Walkers is not exactly clear.
We have only had glimpses into how the Others operate. They appear to be free-thinking beings with some semblance of culture, and they follow incentive rather than mere instinct. After all, they have embarked on a huge campaign against the wildlings and the Night’s Watch, all while marching against the Wall in increasingly huge numbers. They are much more than mindless killers, so there is still the great mystery of the White Walkers' endgame and their motivations.
So if you have ever asked yourself, "What do the White Walkers want?" or questioned their motivations, read these fascinating fan theories to get an idea of what these "evil" creatures really have planned.
The White Walkers Are Simply Carrying Out Their Purpose
They're Attacking Due To The Dissolution Of An Ancient Pact
The Others Are Trying To Stop Azor Ahai From Being Reborn
Their Ultimate Goal Is To Stop Daenerys
The Night King Is Coming To Take His Place As King In The North
The White Walkers Are Trying To Increase Their Numbers