I think that Son Gohan's attitude towards fighting may have indeed changed during those 7 years, or even back in the Cell Games. I think that, during the Cell Juniors' attack of the Z-Warriors and after #16's speech, Son Gohan realized how serious the situation was and that he needed to use the power within him to protect the Earth. As a Super Saiyan 2, he didn't seem at all reluctant to battle Cell, and although that may've been because he was blinded by rage, I think it might've been more than that.Son Gohan, as we knew him as a kid, was an incredible person, with an incredible potential. Piccolo, the Namekian, sought to unlock this potential, and use it as a grounding force against the onslaught of the Saiyans to come. Training for 6 months, Son Gohan and Piccolo surpassed barriers that most people wouldn't have dreamed was possible for both of them, proving that they were an incredible team. As a kid, Son Gohan had made it a point that he wanted to become as strong as his father. However, what exactly is the silent warrior's stance on fighting?
The only way to figure this out, is to look back at the Cell Games, whereas the young warrior stated that he did not want to kill Cell, and he didn't like fighting like his father does. However, what exactly does this mean in context? Does this mean, as a general all around, he does not like fighting? Or does it perhaps mean, he does not like fighting to kill or harm another being? After all, despite how evil Cell was, Gohan still didn't seemingly have a desire to kill the monster.
Son Gohan claims to not like fighting, yet in a seven year time period, he is all too enthusiastic about fighting the incredulous Demon Realm Ruler known as Dabra. In seven years, are we to have believed that the young boy who claimed he did not like fighting, suddenly changed his attitude towards it? I don't think so!
I think in the context of what Piccolo and Son Gohan were talking about, was that Gohan did not thirst for battle and destruction, he didn't desire to cause harm to anyone unlike a full blooded Saiyan. Now, one could say Goku wasn't this way either, however, we never know for sure exactly what goes through Goku's head every time he's in a fight, and he certainly didn't seem to mind the thrill of the battle Cell was dishing out, even if he knew his life was in danger. While Goku may not exactly wish to cause harm to a friend, what about a stranger that he's just met, who he finds out is out to destroy the world? In this sense, Son Gohan differs from that perspective, as he does not like that kind of violence.
It could also be that Son Gohan was in fact afraid of the power hidden deep inside of him when he said this quote. He constantly refused to unlock it no matter how much of a beating he took, and it wasn't until Cell turned the assault onto his friends, that Gohan finally decided he needed to unleash this power. Was Son Gohan, perhaps not afraid of fighting itself, but afraid that the fight he had entered could possibly turn him into a monster?
How is it possible, that the warrior who claimed to not like fighting, would suddenly be enthusiastic about fighting a villain who can be as vicious, if not more vicious than Cell himself? How is it possible that Gohan would suddenly change that moral value in only seven years? The only logical explanation is, it didn't exist at all. Son Gohan as a general consensus, is not against the idea of fighting. He was against the idea that his internal latent power could turn him into a monster of destruction, or worse, destroy the entire planet itself, as well as being against the idea of harming or killing. At least, this is my stance and the way I see it. Sixteen seems to prove it, by stating that he knows how Gohan feels, but it's not a sin to fight for a righteous cause, which means that Gohan probably thought killing Cell would be a sin he could never erase, or something similar to those lines.
You all may see it differently, maybe you think Gohan did in fact not like fighting at all, but I am beginning to highly doubt that based on the enthusisam he showed while he was about to fight Dabra. I'll leave you to criticize the argument how you will, and express your disagreements if there are any, but I believe this is in fact the case, based on what I've seen so far.
After all, Gohan's reluctance to fight seemed to be purely plot convenience. He never showed such reluctance to fight after Piccolo's training, finished off Freeza's scout without hesitation and fought against Reacoom at his full power.
What do you think?


