As someone who has worked professionally as a jazz musician with a room full of jazz LPs and CDs, I would be lying if I said I never used jazz functionally - ie as background music while doing the dishes, as background music if friends were over for a drink. Of course, only certain types of jazz work in this context. And I hate smooth jazz, if that's what you're thinking.
I simply don't have the luxury of devoting lots of time to serious, extended and focused listening that I did when I was younger. That's adulthood, I guess...