[jbapple]

> why would I care about people coming from other countries? I mean, what do I get in return?

This is a pretty stunning question.

Most people care about people other than ourselves. Most people sometimes do things to benefit others, even if they don't "get in return", as you put it, and they expect others to behave similarly. For example:

1. A billion people base their religious beliefs on venerating the self-sacrifice of God dying and/or giving-His-only-begotten-son to help others.

2. Most people believe that people other than themselves can have subjective experiences of joy and pain. Most people would take a little time out of their day, for instance, to help an abandoned, injured infant, even if they would never "get anything in return" for their selfless act; even though the infant can't promise them anything in return or prove that they are suffering, people see a suffering child and feel a sort of basic level of empathy.

3. Almost everyone who has political opinions is arguing not primarily about themselves, but about people more vulnerable than them who are being hurt by existing policy or will be helped by new policy - usually large classes of people that the arguer will never meet.

4. The idea that other people matter is so incredibly common, we diagnose people who cannot experience it with a medical condition sometimes informally called "sociopathy"

So I'm going to assume you know that most people expect you to care about people other than yourself, and I'm going to assume that you actually do care about people other than yourself.

Now try to imagine what it would be like to extend that empathy to foreigners.

That's it. That's the whole trick.

Good luck!