One possible reason could be betrayal. If Naruto discovers that Konoha has been hiding some dark secrets or has betrayed him in some way, like using him without his full knowledge. For example, if they were secretly using his Nine - Tails power for their own gain without his consent, he might decide to cut all ties.
For Sakura, it would be a huge shock. She has always been a part of Konoha and has strong feelings for both Naruto and the village. She might try to convince Naruto to come back, and if she fails, she would be torn between her loyalty to Konoha and her friendship with Naruto.
One possible reason could be that Naruto discovers some dark secrets about the village leadership that go against his values. For example, if he finds out that they have been using underhanded means to maintain power.
Naruto might forgive Konoha because he realizes that holding a grudge won't solve anything. He has seen the destruction that hatred can cause, like during the Pain arc. So, he chooses to forgive in order to move forward and bring about positive change. Another reason could be his respect for the previous Hokages and their ideals for Konoha.
One possible reason could be fear. Naruto has the Nine - Tails within him, and some in Konoha might be too afraid of its power getting out of control. They may not fully trust Naruto to keep it in check.
One possible reason could be that Naruto is extremely powerful and his skills are needed to protect Konoha from a new and powerful threat. His combat abilities, like his Rasengan and Sage Mode, are crucial for the village's defense.
Another reason might be that Naruto is seeking a greater purpose. In the fanfiction, his 'godlike' state could make him realize that there are threats out there that he can't face while being tied to Konoha. He may leave to protect the world on a larger scale, believing that he can be more effective away from the village.
In fanfiction, Naruto might snap at Konoha if he feels betrayed by his friends or the village. For example, if they don't support him when he tries to make important changes or if they side with someone who has wronged him. Also, if the village starts to become too controlling or authoritarian in the fan - created story, Naruto, with his free - spirited nature, would likely snap.
Maybe Naruto has seen too many unrealistic or out - of - character portrayals of Konoha in the fanfiction. For example, some might make Konoha overly cruel or its people too stupid, which goes against his understanding and love for his village.
Another reason could be that he witnesses corruption or unfairness within the village leadership. If he sees that the system is rigged against certain groups, including himself or his friends, he could grow to hate Konoha and decide to leave.
Perhaps she discovers some dark secrets about Konoha's past. Things like the way the village treated certain clans or individuals unfairly. If she uncovers that Konoha was involved in some unethical actions in the past, it could make her lose faith in and start to hate the village. Also, if her loved ones were wrongly treated or sacrificed by Konoha's decisions, that would be a strong reason.