Of course still off topic but here in the States Spanish is the 'useful' language to learn. When I was in 5th grade the elementary school I was at started a program that all 4th,5th and 6th graders (the grade level went up to 6th grade) would learn a small portion of Spanish. It was fine but I had almost zero retention of it, probably because it wasn't a rigorous learning either. (Random comment but the local high school here they have a public safety academy here and they teach them conversational Spanish). In middle school (next after elementary school) I took a trimester of French and fell in love.
In high school I took all 4 years of French. I had a wonderful eccentric French teacher. Sadly I was never able to afford to do trips to Quebec (of which there were two times I believe).
In college I took multiple semesters (I took college credit in high school and bypassed a few semesters of what college coursework would be) and one of the hardest things was transitioning from partial English spoken to no English spoken the higher the French course you go. In order to get a B.A. degree at my alma mater a certain amount of semesters of a foreign language was required.
I have better retention of French but I'm not the best speaking at it, I was always better at reading it. I doubt I could do it off listening alone. Y'all are impressive (said in my Midwest voice

)
On a side note I had a friend from high school who in our freshman year of college decided to take Mandarin Chinese...why I don't know..but it impressed the heck out of me. Sadly she never retained any of it due to mental illness that set in (her whole family had history of that) but it was still impressive to me her dedication in going for it.