Originally posted by: Chandraketu
Mandodari
Sita's reasons for leaving were completely understandable. Since she was being asked to swear to her chastity in front of everybody, she was taking a boatload of humiliation. Let's say she had taken an oath that had her survive it: what would have been the result? Not only would she have been accepted by Rama again, but she'd have been forced to sit with him on the throne of Ayodhya. In other words, the trade she'd have made would have been - her honor in lieu of the throne, a completely unacceptable proposition. Had she been offered an unconditional restoration of her honor and status, she'd more likely than not have accepted it. But this oath was a poison pill that ensured that it didn't happen.
Rama recognized this the moment she took the oath. He thought that by making her take the oath, he'd end this controversy for good, which he did (one way), but I also believe that had he known the cost, he'd either have accepted Valmiki's proof of her chastity, or have disregarded the demands for her return and instead sent her back to Valmiki, either with or without her kids. I also don't see why as far as the succession went, it was essential for him to get back his kids - Bharat was his yuvraj, he had kids of his own, and throw in Lakshman's, and the Raghu dynasty was fine even without Rama having any kids. It defies any ethical logic that Sita wasn't worthy of the throne, but her sons were.
Also, since the question was about Sita's chastity, did anybody who see the kids doubt that they were Sita's? How assinine were they? There was never any doubt that they were Sita's, and their resemblence to Rama convinced everyone that they were his (although I read somewhere that they had Sita's looks and Rama's valor). At any rate, while there were a few things that should have changed the ground realities of public opinion on Sita in those 12 years, point remained that Rama could have secured a future for Kush & Luv outside Ayodhya (like he eventually did) without invoking Sita's oath. After all, if kingdoms could be procured for the sons of Mandavi & Urmila, how difficult would it have been to similarly create kingdoms for the sons of Sita, where Rama wasn't previously the king, and therefore the inheritance question would have been irrelevant? She could have gone with them and been the rajmata of that place.
You are also right that the people of Ayodhya didn't repent, and I wouldn't have given them a quarter even if they did. After all, they caused all this misery, and if they were truely repentant, they'd have accepted their mistake without Sita's needing to take an oath. The fact that they didn't would have made any post oath apologies a lie, since they'd just have been reacting to the evidence, but wanting to avoid its fatal consequences.
As for why Rama sent Sita away when he did, he could have waited until she had the babies and then exiled her, but then, she'd have definitely ended her life, just like she said she would. If the Avadhis could doubt Sita's chastity, they'd have doubted Kush & Luv's parentage, so he'd then have had to disinherit them. Plus, like you point out, they needed their mother, so such an act of depriving them of their mother shortly after they were born would have been even more cruel than what he actually ended up doing. However, I don't think it was necessary for him to send Sita to Valmiki's. He could have sent her to Mithila with a letter of explanation to Janak, who'd have been happy to accomodate her. He could have stripped her of the title of queen, made her a maid of Kaushalya, and thereby given the rajmatas the private happiness of having Sita with them, and seeing their kids grow up. While asking Lakshman to leave her near Valmiki's ashram was more merciful than leaving her in the middle of the jungle, as is popularly believed, I don't think that was the best decision, even for the circumstances. Also, one of the side effects of his decision was the perception of an assumption of guilt unless proven innocent - a terrible message to send to any society.
Plus, on the question of Sita leaving her kids, she knew that from then on, they'd have their father and rest of the family to love and take care of them: for maternal affection, they'd have their 3 grandmothers and 3 aunts. She did know that they were in safe hands. As for why she didn't look at anyone - Rama, Kaushalya, Kush, Luv, et al, it's possible that she didn't want their last images of her to be that of her sorrowful face.
Okay, off my soap box! For now