Well, I am 42.
In my teen years I studied Clasical Guitar up to and incl grade 8, and same with drums.
So that all took up a lot of time, at home, school, and a Sat am music school.
Then I spent 15 years with office jobs, and would practice to learn songs for bands. I also went through a sustained period of teaching myself to play bass as a proper bassist, and also lead guitar properly (developing from my classical training).
4 years ago music became my career, as a gigging musician (drums, bass, guitar) and full time private teacher of the same.
I'd love to say I practice now, as I need to work on certain areas and we never stop learning. However, when I'm not working I like to other things.
I think if I was able to focus on a single instrument I would, but I have to keep 3 balls in the air. So, I only practice to learn songs, and I am able to do this really quickly so I don't spend much time at all.
But, I'm gonna set some goals to change this.