People say travel broadens the mind. That's too gentle. What it actually does is break a specific kind of certainty you didn't know you had.
You grow up in a place and absorb its assumptions without realizing you're absorbing anything. The way people treat strangers. The relationship between work and rest. What constitutes a good meal, a good day, a good life. These feel like facts because everyone around you agrees on them. They aren't facts. They're defaults.
The first time you go somewhere that runs on completely different defaults, it's disorienting. Not in a bad way. Just in the way that happens when something you assumed was fixed turns out to be a choice. People in some countries take three-hour lunches and seem genuinely fine. People elsewhere work in ways that would be considered punishing where you're from, and from inside those systems, they work too. People organize family and community and public space in ways that look completely foreign from where you grew up, and from inside those systems, they make sense.
This doesn't mean all arrangements are equally good. Some clearly aren't. But before you can evaluate them honestly, you have to first notice that what you grew up with was also a choice, not a law of nature.
That's what travel does. It shows you the gap between what you were raised with and what is actually necessary. That gap is surprisingly large. And once you see it, you can't unsee it. You stop assuming your defaults are universal, and you start asking, maybe for the first time, which ones you'd actually choose.
The most valuable thing I've taken from every place I've visited isn't a memory or a meal. It's the small, irreversible realization that things could be otherwise.