2) It's cute when the underdog boy gets the popular girl.

3) It's cute when the two best friends become lovers.
4) Naruto and Sakura have many similarities (reaction, attitude, sensitivity, etc),
Kushina = Naruto, Naruto = Sakura, so Kushina = Sakura.
5) Sakura can be herself in front of Naruto.
6) NaruSaku is the make sense couple and can be found in reality.
7) NaruSaku have a lot of interactions and LOVE is built from it.
8) When the girl said "I love u" and the boy said "Thank u". it means over. He isn't love her. (SS)
9) The boy love the attractive girl who comfortable to talk beside the quite one. (NH)
10) I don't like the stalker girl (*cough*), tsundere girl is the best!
11) I'm agree with @NarutoThePromiseKeeper
NaruSaku appears to be the only pairing that has had development while the series progresses
*correct me if I'm wrong, sorry for my bad English
