There are two questions.
Manik's God-Complex
He was the kid that would have died if not for Dhruv's brave deed, this has sort of made huge impact in the way he views life, his role in relationships. He took Dhruv as a true friend by that gesture, so self-destructing to the point of exhausting one has been natural and right for Manik. He also seems to be boy who had to fight his way to deal with his issues, he likes to appease his friends , take their worries because they are his family and he feels the need to protect the ideal family because to him they all seem to have issues , Dhruv's disease, Bira's family troubles, Mukti-fragility, Alya's loneliness all seems to play on his mind , hence he suits up with an invincible armour to shield his friends from all the harm. That is what true friends do , according to Manik. Hence he has this God-complex where he needs to sort out all troubles, be the guy who makes it all ok , so that his friends, family remains intact.
Here he sometimes comes across over-protective, over-bearing but for fab4 they let it be , indulge him because not only they admire his friendship philosophy but they know Manik needs it to be sane and in control.
Thankfully with Nandini , Manik will try to move away from it , it will be a struggle but she is there to remind him to be selfish, think about himself and not keep sacrificing himself for others, because somewhere that is a disservie to his friends and they be guilty about it.
@Second Question.
We had this debate somewhere else on IF about the roles of men and women in society. The crux was as much as both were born equal, society conveniently pegged women as the home-maker because they breed . It made the demarcation to set up a society conducive of those times where males used to work while females handle the home - there are historically exceptions but majority followed that model. What we haven't realized that society is dynamic, culture evolves with time. As we move towards equality in every form,these lines will be removed , so it is ok for a male to be homemaker while his wife earns or vice-versa, there doesn't need to be social stigma . I think blaming it on tradition is wrong, those practices could have or might seem justifiable to those times but using the time citation we kind of restrict the society from growing , exploring .
So if two kids, male or female, need to be equally educated, then they both also need to be socially conditioned to not be caged by the stereotypes.
VogueIndia had this powerful campaign- Men don't cry or something. I think thats says it all. Men should cry , there is no shame, just like Women can handle themselves because they are as capable.
CC - I sin.