A recent research presented in the article above indicates that
most people don't move
, geographically speaking. It is curious how most people are (randomly?) born somewhere and they tend to look for the opportunities to make a living on that place, do not go too far or think that they actually enjoy the freedom of deciding to go to anywhere else in the world unless they have serious pressing motivation (hunger, crime,...).
With everything I could read in previous posts, I would add that there is one very important thing to consider when it comes to human migration, and that is the language barrier. If someone moves from Bulgaria to Germany or France they will have to learn their language if they want to find a serious job and live there, while on the other hand someone who lives in the US and wants to move from New York to San Francisco, or maybe the UK already has the advantage that he does not have to learn the language.
Yet I think a lot of people are moving in search of a better life in Europe, because the fact is that millions of people from Eastern Europe have moved to the West in the last 10 years, with the addition of 2+ million of those who have come from outside the EU.
The example of Romania perhaps best shows how large the emigration from the Eastern EU is.
The accession of Romania to the European Union in 2007 represented a turning point in Romanian emigration. While some restrictions on free mobility remained in place as late as 2014, Romanians increasingly have increasingly migrated to other European Union countries such as Italy, Spain and the United Kingdom. Emigration has become a major social and economic phenomenon for Romania, the population of which has fallen from 22.4 million in 2000 to 19.5 million in 2018, with outward migration responsible for more than 75% of this decline.