Why Does Rockstar Keep Doing This?

Upon release of GTA IV, the Rockstar writing crew received an excessive amount of praise for the creation of Niko Bellic. Two years later, many people have realized that there was a huge disconnect between the game play and the character of Niko. How can this man, who wants to have a different life in America, kill hundreds of cops and even some men that he has called his friends? Subsequent releases of The Lost and the Damned and The Ballad of Gay Tony did little to correct the problem.