Come on KSarat, do you honestly think that a guy having a family can actually survive on such a meager income? If he ends up paying 7K minimum for house rent, then car, food etc where the hell would he get money for shopping, movies, entertainment etc..
Here is my criteria to live a comfortable living - The bare minimum I mean
Single man - no wife, no kids, no need to send money to parents - 12K
Married man with only wife and a new born baby who has not started school yet - 15K
Married man with wife and school going kids - 20K
This I feel is the minimum one should get.. Though life would be tough even then to make two ends meet.