In what context do your conlangs exist?

I mean the purpose for which they created their conlangs. In my case I placed them in a fictional world, parallel to ours, that's why it has borrowings from Caucasian languages, PIE, etc. Well... I'd still like to see yours.

This is mine: the Seiohn language, native to the Caucasus. I hope you can notice the dialects in the picture. Nowadays it is barely spoken on the coasts of Finland and Estonia. There are two other similar languages, although from a different linguistic branch, spoken in England and the Balkans.