My take on Bali wadh. Few points
1. Sugriv waited for a year for Bali outside cave bde seeing blood flowing out n assuming bali dead

2. He was happy to see Bali alive n was ready to give him throne back

3. Still ahankari Bali attacked him and threw him out, captured his wife.

4. Shri Ram who himslf had lost siya to a durachari, how he was supposed to save durachari Bali.

5. Thus killing of Bali ws justified even tho Ram knew if he saves him he will be a greater help than sugriv, given tht he had kept ravan under his arm for 6 mnths tht strong he was

6. But that's our maryada purushottam Ram for you, he chose nyaya and helped sugriv.

7. Now why hide n attack Bali? That's cuz of Brahma it's vardan it was the only way to kill him.

जय श्री राम