Both, haha. With some people you have a stronger connection than with others. And part of learning a new language also consists of getting to know the culture of the other country. With some people you may not really learn a lot language-wise but by exchanging cultural ideas you help eachother to understand how other people think. And you can incorporate this into your language stuff. I mean, you can't just say exactly the same things in English as in e.g. Chinese or Arabic. So I really enjoy talking with some people even though I'm not actively learning the other language. And many people have interesting stories, that's for sure.