Your ability to travel goes hand in hand with your freedom.
There is an excellent yardstick for measuring liberty and quality of life. Simply consider how much freedom of movement you have. From that basic indicator, you can determine if you live in a police state and/or a cult, you will know how much information and education you have access to, and you will have a good sense of the level of prejudice you are being exposed to.
Your ability to travel goes hand in hand with your freedom. If you live in a country where the women cannot travel without the permission of their husbands or fathers, you live in a misogynistic police state. If you are in a religion that does not allow you to interact with outsiders or learn about opposing points of view, or worse yet, cuts you off from family, then you are in a cult. If you can’t go anywhere without having your papers constantly checked by authority figures, then you are a slave.
Inhibiting your ability to go where you wish is an effective way of controlling the information that you have access to. If you can’t even move about the internet, then someone else is controlling your narrative, and they have an agenda that is not in your best interest. If someone wants to leave and you don’t let them, then you have just reduced them to a mere object.
Also, preventing women or minorities from having access to education is a self-defeating power play. One should be able to travel in mind as well as body. If your opportunity to learn is hindered, you should wonder what the powers that be don’t want you to discover.
People who put up walls to restrict movement are the worst kind of racists. They are either attempting to keep a group out or keep a group in. Either way, they are restricting the flow of information, and preventing the masses from becoming unified. Divide and conquer.
The only things that should prevent you from being able to travel are your own priorities and your own budgetary constraints. And even that is a can of worms, because income inequality is another great way to keep us all ignorant and close to home.
The more you travel, the more you learn. The more you travel, the less you hate. The more you travel in mind, body, and spirit, the more you know what it is to be free.