My grandmother used to say " Life is like a flywheel". We have control moving one half, the other half goes by itself. The first half we live for ourselves, the second half we are compelled to live for our children. This was like that even for our parents and grandparents and great-great-grandparents time also. It is same for next generations also.
Only very rare case someone live or get to live for their parents. Parents adjust, accommodate and re arrange their wish, need, hopes, aspirations and lifestyle in a way to be of help to children's welfare. Eventhough they may secretly wish that their children are with them, they will also understand the realities.
In the case quoted in the thread, the elder parents wanted only the welfare of their children. So they sent them abroad. Those children also felt happy and they tried to keep their parents happy in someway they thought apt and feasibly optimum. Now they themselves have become parents and their priority is their own children. We cannot blame them. That is the traditional inherent sentiment.
The reason for all this is the change in life style and needs and sources. Earlier it was sufficient if all the children stayed in same place, in the same occupation, same agriculture, etc. It was okay that a few hands earned and fed all others, because the main need was food. All in the family lived jointly under the same roof. Now needs have increased multitude. Each one wants to or has to earn and the sources are not sufficient in one place. So migration happens. This leads to separation and even desperation as in the present thread case.
At least the modern facilities help in being 'connected'. I will say that blessed are those who get to stay together as a big family under one roof or at lest in close proximity.
Don't sweat the small stuff and it's all small stuff.
It is a catch 22 situation. We want to send them to foreign lands for their welfare and rich life but at the same time we wish they could be with us.
This has now become a very general problem of a large number of families as day by day students are trying to get jobs outside the country.
Knowledge is power.