On your initial post I commented.
I feel,if wife is not happy, it is not at all advisable to leave her alone with small baby back home just for the sake of money. If someone does, he is not father but a financier.
There are 100 million people in India. Are they not staying with the family and happy too? Does money alone bring happiness and there is no place for emotions?
I also don't agree that opportunity knock only once. This is applicable to the people who have no potential or confidence in their ability.