Why was Theon tortured by Ramsay?

Related questions

1. How did Ramsay Bolton die?
2. How did Ned Stark get Theon?
3. What happens to Theon in Game of Thrones?
4. Who did Ramsay kill?
5. Who killed Robb Stark?
6. What episode does stannis die?
7. Why is Stannis the rightful king?
8. Is Iwan Rheon Welsh?
9. Why is Asha called Yara?

Tags

1. #trade
2. #because
3. #capture
4. #really
5. #greyjoy
6. #psychopath
7. #asked
8. #thrones
9. #purely
10. #tortured
11. #balon
12. #could
13. #reason
14. #happened
15. #bolton
16. #theon
17. #roose
18. #ramsay
19. #north
20. #conscience