I think that living abroad has a lot of advantages, but it has disadvantages, too.
First of all, I would like to live abroad to see other cultures from the rest of the world, to meet more people, much more people than I know nowadays. Moreover, I would learn other different languages.
On the other hand, when immigrants come to our country, they must find a job to survive here and, generally, they send money to their families that live in their countries. Futhermore, they must pay their travel, that is often very expensive and hard with regard to the transport.
In conclusion, they must overcome the adversities that implies to come to another country where they hope to get a better future, a better life.