Has anyone NOT listened to their system for a long time?

Yes because of an unenviable place due to a mean spirited divorce.  She got the house I got garbage.  Lest you think I am kidding you- I asked my son to retrieve my preamp, he did so when I was led to believe that the audio was mine.  She is keeping the rest of the gear even though she doesn't even realize that she can't play it. It goes on and worse from there.

There is nothing wrong in audio as a hobby  That means that I like gear and what it contributes to a sound I think I desire.  When enjoying my equipment I don't listen the pink noise or test tones. I started out with a portable "transistor"  AM radio. It wasn't long after till I got a LLoyds all in one receiver turntable,.  I wanted something better and louder almost immediately..  The rest is longer story.

I have to admit that I too have turned on a tubed amp to warm up and ultimately never played anything when it was ready to play.
I too now have an apartment, I am using headphones which has made me more comfortable in terms of decency towards the neighbors.   However I  don't like using headphones very much, despite having  pretty good tube dedicated amp and cans.  I guess I could buy $3,000+ headphones and a $4,000 amp but really don't think that's the problem. (nor am I that flush.)
Finally and most sadly is my hesitation to develop a system that can use internet derived material, where a lot of good music is.  The Headphone community uses a combination DAC/Amp in many case and costs can be quite reasonable. Since I have an amp all I need is the DAC.
Please excuse the lengthy crying in your beer!