[quote=@Invisible Man]
<Snipped quote by Flamelord>

Quiet you, he had the hero complex. True, he did have good intentions in the beginning, but he sorta turned insane in the long run. Pandora does that to you I guess, or being betrayed a crap ton of times by Vault Hunters and your ex-girlfriend.  
[/quote]

I'm just gonna point to the Game Theory video on the subject, for he says it a lot better than I could.

Regardless, Jack was the hero. Just not the protagonist ;)