I would be curious to know when the median human in each century saw their parents for the last time in Western society. As there were so many events where sold

I would be curious to know when the median human in each century saw their parents for the last time in Western society. As there were so many events where soldiers went off to war and settled where they conquered or colonists sailed off around the world never to return or conquistadors decided to just stop somewhere and marry a local woman.