Learning languages

I took courses in Italian and German while I was in college, more than 20 years ago. I have also dabbled in Lithuanian and Italian (again) on my own since then. Lithuanian is the most different from English. The main reason I try to learn another language is to stretch my brain and give me different ways of thinking about the world. Will I ever use it? I don't know. It depends on 1) if I have a reason to use it and 2) if I have someone with whom to practice it.