What a question!
If I am not listening intently, it usually means that I am not in the same room as the system and speakers.
I live in an older apartment (pre-war) in Queens. No big, combined open spaces like you see on cable. Lots of walls. So, I could literally be changing a litter box in the kitchen, while the music is playing in the second bedroom turned den ... down a couple of hallways, off to the right ... you get the idea.
As a semi crippled senior citizen who gets around with a vertical walker and cane, I am pretty active. But when I do sit down, I am pretty much planted. If I am in front of my main stereo, I am typically listening intently, at most reading a magazine. In front of the stereo in the den, I have to force myself to listen intently. There is always a laptop to my left, which seems to have a home directly on my chest. I could be half listening to a pod cast, while the stereo is on. Would not be the first time that the large screen TV and stereo are competing with each other.
Maybe it's better when I don't focus on music as much, because I find fault with perfectly well performing equipment. YouTube is such a distraction, thank God
Intent listening - 30%; everything else - 70%.
Rich