No matter how good or bad a game is, there will always be an alternate reason to play the game again - the online part that is. Some games lack in server quality and some games lack in fun online gaming. Overall, there are some games that stand out. Then there are some games that don't have online at all but still they have achieved many awards and great reviews, such games as Uncharted, Oblivion and Assassins Creed. If these games had online they would of blown us all away.
Enough about single player games, check out the good and the bad of online gaming in the full article.