There are a few reasons you would leave a country,it might be for political reasons or it might be that a war is happening and you are trying to look out for your family and keep them safe from harm.Or it might just be a simple financial reason and you're just trying to have a fresh new start.
Or sometimes people just wanna find new places to work, enjoy a new culture or just explore the world one country at a time. Or it’s because there is gang’s that linger everywhere and there family doesn't feel safe.