I think you may have misunderstood my post, and I recognize that I didn't really explain a complex issue (multiple issues really) in detail, since that was not my intention.
The first question I touched upon was 'why people from countries with significantly different socio-cultural and religious dynamics (in contrast to the West) move to Western States'. My reference to 'hierarchy of needs' was made in this context, to try and explain how human behavior is 'generally' driven by the 'hierarchy of needs' theory (Maslow - google it / look it up in Wikipedia - it's pretty straighforward to understand as a theory, though application in the real world is much harder due to complexities in human behavior and impact of variables ). The most basic human needs involve survival, saftey, material security (food, economics, etc). When these basic needs are not being met (or are in danger) humans don't generally care for how different the religio-socio-cultural dynamics of their new home /destination are. India, Pakistan and Bangladesh have millions of laborers working in what essentially amount to 'indentured servitude' in the Gulf, yet more and more go to/return to the GCC countries because they feel their basic financial needs are better met there.
The second question, that I referenced in just one sentence, was that of immigrants trying to morph their adopted home into a reflection of the home they left behind. This is a much more complex issue, and the behavior of immigrants (even all Pakistani immigrants) isn't always classifiable into one category. There are some who work within the system to try and change it to conform with their religo-cultural values and others who essentially violate the laws of their new homes in attempting the same. While the latter cannot be excused, the former I see no issue with, since 'working within the system' exposes their views to open debate and discussion, which is what we need in Pakistan as well, to help shift attitudes.
This is a really well thought out post. Yes, migrants may chose to develop some support system in the foreign country to make themselves at home. South Asians have done that to a great extent in the Gulf, UK, Canada and the US. I think no one should have a problem with that. But when that leads to ghettoization, then it will increase isolation to everyone's detriment.
And yes, you used the right term, "indentured servitude", and you are also correct about this being preferable to the economic insecurity back home. Along with this semi-formal slavery, South Asians also have to tolerate the cultural hegemony of Arabs, who treat South Asians as inferior in a way that modern society has otherwise eradicated. What irks me is the way in which this Arab racism is casually dismissed by my fellow Pakistanis, as if it is a matter of pride to be ill-treated by Arabs.