As we saw in Game of Thrones that Ramsay Bolton tortured, mentally and physically almost constantly, Theon Greyjoy. Then why, instead of killing him, did he transform him to Reek who is completely psychologically broken?
When Ramsay captures Theon , he converts him into Reek for following reasons:-
- By keeping Theon alive, he has a hostage from the Greyjoy family, who are always a threat for the 'Warden of North'.
- He finds a loyal friend and servant by brainwashing him. Now, Theon had some personal motivation but Reek has none. He is completely faithful to Ramsay.
He can use him time to time as Theon.
a. He did for negotiating with the Ironborn garrison holding it in an attempt to convince them to surrender the fortress to the Boltons.
b. To give Sansa and Ramsay marriage value in the eyes of the North. As Theon was ward of Stark, his presence approves that Sansa is not forced into marriage. She is married in presence of her family. As Theon is like family for her.