It's the times Nicky. Back in the early 20th century Italians immigrated to the USA due to overpopulation, poor living conditions, and economic woes. Just like everyone else they wanted a better life and found it in America. These days Italy is trying to "keep" the younger population within the country because the older generation is getting larger and no ones making babies anymore. Italy is actually offering dual citizenship to people in the USA, Canada, and brazil who are of Italian descent. Bottom line is you won't ever have that kind of large scale immigration again, especially not from Europe.