system
Given the following post, respond as if you're commenting on Reddit:
human
How common it is to emigrate after doing a postdoc overseas?

I have been invited to do an interview for a postdoc position, at an institute in STEM known worldwide for its quality. However, I am 30y old, finishing my PhD in south america, and the institute is in a country in Europe

I'll be honest, I'm tired. I left my hometown and family 6 years ago (3h by plane) to pursue MSc and PhD, and now I want to finish up and finally settle down, since now I have a whole support and friend network on this city. I would not move to a different country to only spend 12 months and come back. 

How often, or difficult, it is for someone in my situation to emigrate? I do not mind the "moving" part itself, what I absolutely do not want is to do a back-and-forth across multiple countries for several years pursuing 12-month long projects. If I am to move somewhere else, I want to settle down.
gpt
Welcome to the post-doc grinder. It depends on what you want to do in your future. If you want to stay in academia, this is your life. If you want to to be in industrial research, than this may be relevant experience. If you just want to find a solid work place in industry or government (and focus on your private life) then a post-doc would be a waste of time.