Neglect, abuse and torture as the first memories he had of the village, Naruto grew up in cold apathy - appropriate for his hyoton bloodline - with only a few people to feel any sort of emotional attachment. And even with them, he rarely display genuine emotions.
He grew up with only one goal in mind, get stronger to be able to protect himself and those whom he cared about. Protecting Konoha is just a bonus in the long run.
NOTE: Strong!Naruto. Slight AU. Mentions (implied or direct) of Slash.
SEQUEL: Steel (Naruto Fanfic)