Millennial here. I got a degree in Classics so I learned both in college. I continued to take Latin in grad school. Unfortunately I never used them, because, you know, there are no jobs in Classics, so I realistically have lost both. I could probably identify nouns/verbs/articles/etc and some vocabulary in a sentence. But that's it. Plus, I'm learning Dutch now, and that has kicked out all other languages rattling around in my head.

I really enjoyed learning both! And doing so taught me a lot about grammar, linguistics, and etymology that I've carried with me through life even if the languages themselves didn't stick. Would recommend if you have the time.