Hulk, the character, is defined by his resentment of Banner. Is defined by his struggle to find his place in the world and not be considered a monster.
He is not defined by Banner's struggle to be human again. Banner is a completely separate character. And as a matter of fact, Banner learns to accept and live side by side with his other persona. There is no attempt to control Hulk, but a mutual understanding does grow between them. See this is what you don't understand. Hulk and Banner are COMPLETELY separate entities. Hulk isn't just a "heightened" or more angry version of Banner. He is the very personification of Banner's pent up rage. That is what makes the character compelling and relatable. We all have those bottled up feelings, whether it's anger or other emotions. What also makes it more compelling is, as was touched on by Ang's movie, Banner is actually afraid that he might enjoy it, because Hulk is what Banner isn't. A being of pure, unrestrained emotion.
Explain to me why it was acceptable for Hulk to say "HULK SMASH!" in TIH but he can't say "PUNY HUMAN" in Ang's version? Even though the way it was used in TIH was superfluous and just a catchphrase and in Ang's it was used for characterisation and depth?
You show a fundamental misunderstanding of the Hulk character.