What the banjhakri wants

Why does the banjhakri take young wards, house them feed them train them test them, risk the failure of their training, spend so much time energy and emotional effort, only to allow them to go back to their villages and serve their communities? This would make sense if the banjhakri was part of the community, it would be his way of giving back but considering that very few people can even see him physically that seems unlikely.

An alternative, more likely theory brought up which is accepted widely is that the banjhakri is a minor diety, the son of the Sun and he and his female partner consider it their duties to protect their people and keep them healthy and safe. Since he's not an all-powerful entity that can be everywhere and take care of everyone he trains healers to further his cause, bringing them in from the communities themselves. Like a Queen protecting her subjects or a goddess protecting her followers, a banjhakri simply considers it his duty to protect those living in his realm, despite his limited powers and abilities.

One wonders then, why is the banjhakri so underpowered when competing deities, even those with quite shitty attitudes can seem to move the heavens and hells in favour of their followers? One possibility is that he is not in favour of the local group of gods, who receive the offerings and the corresponding energies that come with them, perhaps due to their disagreement with his choices. Another possibility is that perhaps he has chosen not to keep company of them, accepting the loss of greater powers as collateral damage, due to his disdain at their lifestyle and approach towards worldly affairs. It is known that the banjhakri, despite being the son of the Sun, maintains close interest in matters of the moon. Perhaps then he agrees more with Chandra's more egalitarian approach to worldly affairs versus Indra's hammy authoritarian rule of Swarga and the subservient realms.