I mean as with most rights, if things are going well, you don’t really directly need them, but when shit hits the fan, things are different. When you’re healthy, it’s tempting to not care about healthcare. Get sick and that can change quickly. Have a government that you agree with and (at least for many people) it’s tempting to not care about free speech. Get a government you disagree with and the tables turn. Similarly, if you’re doing decently there’s not much of a need to migrate. If you are deprived of food, clothing or shelter, then mobility can be a way out. And not just that - spatial mobility can be one of the most important factors for social mobility. And finally, if you have a fascist government that in the worst case has a target on your back, then you’ll want to make every use of your mobility (mind you, there’s a reason why authoritarian governments like to clamp down on spacial mobility).