Exactly - as a species we get the males to take the risks.  There is much to be gained from leaving a warzone, but when you see the footage of the refugee camps, children drowned, the immense cost of doing the journey, dealing with people smugglers etc it makes sense that you would send a young male in the family through this first.<p>If said young male gets to the country on the other side they are probably the most employable too.