I did indeed go and live and work on another continent when I was younger. On my own. However I very quickly realised that it was not fir me, at all, and indeed the older I have grown my thoughts reflect the experiences I had.
Yes, it was strong advice and an approach that sounds like it served both you and me well, with different end points, in determining our priorities for personal happiness and fulfilment.
In fact I now wish that we lived even closer to parents, not least because they would be prepared to help with childcare and have said so, without which working for me has been difficult.
Yes, logistical challenges of life without (willing, able) family nearby are not insignificant. We have put a lot of effort into building friend networks eg so that DS1 had somewhere secure and familiar he could go when DS2 was born, or to pick up kids in an emergency. Not the easiest, and doubly so when I know my parents would move heaven and earth to help us if they could.