Why do targaryens go mad?

Related questions

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2. Do the targaryens marry each other?
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6. Why did daenerys burn Kings Landing?
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Tags

1. #world
2. #himself
3. #religion
4. #overzealously
5. #purity
6. #believed
7. #known
8. #starved
9. #targaryens
10. #sinful
11. #material
12. #obsessed
13. #because
14. #grave
15. #point
16. #blessed
17. #early
18. #baelor