I've never traveled far, but I would imagine the most remarkable thing about it is that it's simply good fun, like sports. I just don't buy the notion that one's worldview is necessarily constrained without physically touring different places around the world.
If you go deeply enough into a sport or craft, it will also change your worldview profoundly, you will look at things in different ways, due to both the activity itself, your relationship to the activity in both mind and body, and also the people you meet and places you go due to the activity. Same goes for travel - you can travel far, and never expand your worldview - the average person in my country (UK) frequently holiday in Spain, but stick to British-centred resort packages where they never stray from the hotel complex and eat British food and drink British lager. I wouldn't say that's worldview-expanding travel. But that's like engaging with a craft at a hobby level, you're (probably) not gonna get your mind blown occasionally doodling a stick man with a pencil either.
But ultimately the point I wanted to make is that if you've never done the thing you're making assumptions on, that people who have done the thing say has a certain effect, you denying that effect is exactly what you said: your imagination.
