[anal_reactor]

I spent years attending various language courses where I literally sat and talked to people, but I never became friends with any of them. If anything, it usually felt like stepping into a world of individuals hand-picked to have nothing in common with me, except for the fact that they were trying to learn a language too.

[zeroCalories]

I have that feeling at work. I've spent years talking to people daily but never gotten to know them. But for stuff like hobbies I've never had trouble filling the time talking about the hobby. You don't find it interesting to talk about why you're both learning the language, or what books/media in that language you enjoy?

[robjan]

Language courses generally have a clear end date so it's not surprising that many people wouldn't be super invested in making or maintaining new relationships in them.