1. traveling gives you experiences. You don't need to travel constantly to learn and gain from traveling.
2. Moving away from home (abroad or to a big city) gives you again a lot of new experiences. New insights, new world view.
If i move home today, i'm a complet different person than my friends which never left and while certain things might look the same from the outside, its not.
Of course I understand the upsides of traveling, and even moving abroad. I have done both myself. Here is the first comment I made on this thread:
>>> There are pros and cons to all possibilities, whether it is staying put, traveling as a tourist, or immigrating in a foreign country.
What most people who repeat these memes of "moving abroad gives you new experiences and perspectives" miss is all the negatives that can come with that. I have tried to inform people of some of the downsides that often come along with the positives, based on my experience and that of people I know.
If people want to stick to overly simplistic ideas about living abroad, they are free to do so. But I would feel I'm doing them a disservice if I did not warn of the downsides -- I wish somebody had told me about them before I left.