I wish I could speak Finnish. But, actually, there are tons of languages I wish I could speak. All of them, really, but Finnish is the first one I thought of just now.
I’m in the US and English is my my primary language. I studied Russian but have forgotten a lot of it. I know a few words of German and French, but very few.
Edited to add: Please tell me what your primary language is. It would also be interesting to know what other languages you speak, if any, and where you currently live.
I would’ve taken Spanish more seriously in high school if I knew I’d end up living on the west coast as an adult. Besides being better able to communicate with people whose first language is Spanish it would also open up so many movies and novels that aren’t translated or subtitled. Arabic would also be cool to learn.