The thing about red wedding is that you should always listen to your mother! If Rob only did what his mother told him he would have had gorgeous wife and they all would be alive. Even Ned would be alive if he listened to his wife 
. Mothers always get to say "told you so", it's a law of nature.
Maybe so. But IMO the Starks were the most righteous and always tried doing what was right, even though they would severely be punished for it. Maybe what Robb Stark did was wrong when he didn't conclude his marriage with the Freys, can't really blame him for choosing love over an arranged marriage, and he proved to be a great commander and would punish anyone that commits crime, no matter the rank. It's people like them that would make the world a better place
I try to imagine which despot I would like to live under if I had to choose one from GoT. And it would pretty much be the Starks, Martells or the Targeryen queen.
And there is still hope as the Starks are yet not dead, and the Martells and Daenerys have a lot of potential.
