Maybe, do you find them difficult or easy to learn? I find them generally easy to learn because they have a small vocabulary and, usually, a logical structure. So if you are like me they probably don't count.
I started leaning spoken language, currently Japanese, because it is mentally challenging. My father died of dementia. He was intelligent person during his working life, but when he retired he no longer had any challenges to deal with and this was probably a factor in his decline. It was depressing to watch the progress and I realised he was not much older than me when it started. They say, and this study backs up, that you can slow the effects of brain aging and likelihood of dementia by making your brain do tasks it finds challenging. I knew from earlier learning some Russian that I suck at spoken languages. In looking for a mental challenge I knew writing code would not be the way to go as I find it reasonably easy. So I started learning Japanese. Six years later and I still suck at it, such slow progress shows it is challenging for me. I guess the next decade will show if it has been worth the effort, so far it just makes anime more interesting to watch and travel to Japan more enjoyable.
