system
Given the following post, respond as if you're commenting on Reddit:
human
[LOTR] Were any of the Nazgul originally good men who tried to use their ring for good purposes?

Such as protect their citizens from threats, increase knowledge and craftsmanship, and eliminate famine and disease? If so, did they last longer before being corrupted by the One Ring?
gpt
We don't really know much about the kings who became the Nine. Only two of them get names in the text (the Witch King of Angmar and Khamul the Easterling). We know further that three of them were Numenoreans, which means they were Men of Numenor who were corrupted by Sauron's whispers and were some of the people who led to the downfall of Numenor. (It's unclear how many of them were Black Numenoreans aka people who were corrupted while Sauron was in Numenor and how many were corrupted later, but they were long-lived quasi-magical Men like Aragorn but moreso.) It's a good bet that those three were corrupted mostly by a desire to live forever; that's how Sauron got his hooks into Numenor, by playing on the already-godlike power of their civilization but making them jealous of elven immortality.