QUESTION: Why did Lord Rama abandon Maa Sita?
This is not my specialty, I am a devotee of Krishna, who, I’ve heard, was Rāma in a previous life. :) Nonetheless, I will try to share with you whatever I know about this heartbreaking topic.
Why did Rāma abandon Sītā?
The answer is simply this: Rāma’s reason-for-being is not prema, it isdharma. Specifically, Rāma’s reason-for-being was to illustrate rāja-dharma, the moral duty of kings.
If you are a king, duty to your citizens supersedes your dut