I live in California, having moved here with 2 children many years ago. The tables turned somewhat when my son and his wife moved to Cape Town where they have had 3 girls. It's a good life for them, good schools etc, but SO far away. I do my best to keep in touch, monthly parcels, cards, Skype etc. I try to visit at least once a year, but, as the saying goes, visitors, like fish go off after 3 days,so staying for a month or so is really too much for all concerned. I used to feel the same when my in laws visited us..
We were really fortunate this summer when they came and spent a month with us. Upon leaving, the oldest granddaughter said, 'it should be against the law for families to live on different continents'. Out of the mouth of babes!