Why do people immigrate to other countries?

The country with more immigrants in the world is USA. In the society exist a lot of problems, so the people decide to search a solution and in some cases that is to one people move maybe to other country with more opportunities the job or a good life. In some cases, this option is good for everyone in the family, but exist another case that maybe is very difficult. Exist a lot of reason for make it, but the normally is the money, so they find a country with a good opportunity to work. Is normally that only one person moves to other country, because exist problems for move everyone, so when they are there, they try to find a solution for also move to the family in the same country.

In my opinion, this is very bad for everyone because exist families that after of this they never will lock their families, so this is very bad in the society. Always we can find a different solution maybe work more or maybe have another work but this option in my opinion is the last. maybe have goods benefits or maybe is a good idea to live in another country, but in almost all of the cases, this finish very bad for the families that live in the original country. In short is better search another solution for that problem.