You open the email and are disappointed to realize it was about people speakers not electronic speakers.
Your all-time favorite track is a song you don’t particularly like, but it sounds so dang good on your current set up… 
When your mate says " Look at the cans on that " you check her headphones.
When your bank account balance is smaller than the THD of your Amplifier.
… you use music to listen to your audio equipment, rather than using your audio equipment to listen to music.
When you have a dedicated digital room and an analog room and give your wife a 27’ TV with tiny computer speakers and she’s grateful…
When the power cords that came with your gear are unused and still twist tied in a plastic bag.
…when your guru wears shorts, ZZ Top beard and a Hawai shirt…
Or your attic is full of boxes or crates as well…
… you choose music based on the format
… you think SACD has a future
(substitute DVD-A, MQA, DSD …)
… you think other people might be even vaguely interested in your audio system.
… you think playback of recorded music can replace live music
Your electricity bill on Friday night…
… you think the invention of solid state was the beginning of the end of the universe as you knew it.
So true! Friends of mine drop by to listen to a few records and actually want to talk about the music instead of the new bearing on the turntable. I mean, it’s only music - can’t you see how much the bearing improves the space between instruments?!? Heretics!
If your wife says you have to choose between her and the hifi …
(I knew someone who made this decision in favour of sports car racing, which is more understandable than hifi.)