Learning even one new language when you are already an adult is hard (or even almost impossible if complete fluency is the goal) for an average person. It's not

Learning even one new language when you are already an adult is hard (or even almost impossible if complete fluency is the goal) for an average person. It's not just acquiring some knowledge, it's hard, and I'd say in general people are much more likely to f up their relationships just for the thrills than to learn new languages just for the thrills.