"You are wrong if you think that having other children living in the same country as you lessens the pain of another living far away"
I think for some it does, by easing the loneliness, though maybe not for you. The OPs reference to hers being an only son, also acknowledges that this makes the pain worse
"In response to your point about 'globalisation and international migration' like most parents of ACs who live abroad, I think my son's life is his own and I accept it is entirely his own choice where he lives."
Of course, but the price paid for such liberty is high, and I do not believe its a good and healthy thing for societies that families are scattered across the globe, although it can be very good for the migrants themselves. The elderly pay the heaviest price and you have my sympathy.
German voters slide inexorably to common sense …



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