I have noted that the particular mood that I am in significantly effects how and what I hear in music, however, other factors like ambient temperature, humidity, barometric pressure and air ionisation can have profound effects on one's involvement and how well a recording sounds. Even the time of day will make a difference in how a recording sounds. For myself, I find that listening to music early in the morning or late in the evening is best.
This assumes that one listens to music when sober. Alcohol and other drugs will dramatically change how and what we perceive music to be. At my age, a couple of glasses of wine can take the harshness out of a lot of recordings and move one to a mellower genre of music.
For background music, I normally resort to FM radio or digital TV radio if I want something just to raise the noise level in the house and keep me company. I tend not to play any of the recordings that I truly enjoy while doing household chores as I feel compelled to continually sit down and listen. I can get easily distracted .
As far as how much I will play a recording, well some recordings are timeless and I have no problem listening to them over and over again without tiring. That's why they are my favourites.
I don't buy software, whether digital or analogue just to fill up shelves. Space here is already at a premium. I buy music to listen to. So my collection might not be as extensive as others but what I have I truly enjoy.
These days I am more concerned about lifeless recordings that are engineered to sound good on low-end systems. Springsteen's 2007 Grammy winner comes to mind. A terribly hollow and compressed recording that music enthusiasts do not deserve.
Well, that's my 2c worth.
Rgds,
Jan