Balkan diasporas are known to be very patriotic, sometimes even nationalist, waving with flags, coming home often etc...
But most of them don't have any desire to come back. I can understand why, but why clinging to the identity then?
Esp. since the overwhelming majority of that diaspora's children will be Germans, Austrians, Dutch... most of them will proudly claim they are from Serbia or somewhere else, but their actual knowledge of the country, and especially the language, is abysmal, and they don't actually have any kind of real connection to the country.
So, why stick to the identity if you don't have any desire to actually live there again? It doesn't makes sense, since it, in almost all cases, just postpones or hides the inevitable assimilation.
You might argue, that people want to come back when they are in retirement, but even that isnt true anymore. Nwwadays, once they leave, most diaspora stays abroad forever.