The NGE itself (Cutting back on professions; linear, level-based improvement; etc...), SWG's general flaws (Numerous unresolved bugs, constant lag, and lack of new content), and upper-mangement's general attitude towards the game (suddenly springing new "improvements" on the community, hardly ever taking player input, constantly playing Russian Rolette with the Dev Team, and other things) led me to quit SWG. For me, it was more of the NGE being the final straw in a long line of things that were frustrating me with the game.