I think unattached young males will generally find it easier (physically) to flee. Stronger, fewer dependents.<p>If they do have a family, many are trying to establish themselves before bringing a family over through safer means. I know if I&#x27;m relocating my family (even if just arriving at a train station on holiday and trying to find accommodation for the night), I&#x27;m the scouting party ahead of the rest. It is dozens of times harder doing that with a full family.