How do you know when a stereo sounds good?

Oh I see. Appears the point of this thread and loaded question apparently was to assert what we like is completely subjective which means anything goes just because. Got it! Mr Denney and his Synergistic company got that covered in spades! Where can I buy the stock?

My first little "system" was an 8 track player that apparently had an amplifier and a couple of speakers.  What did I know, I was a teenage kid.  All I knew was that I could listen to the music I liked in my bedroom and not have to listen to the country music my parents listened to, or all the commercials on the radio.  It pleased me. 

Over time, my systems have continued to improve in sound quality.  Why do I need to "conclusively prove" that my system sounds good to me?  Could it be better?  Yes, of course.  Is it good enough?  For now.  Am I spending time obsessing over what little thing I could do to eke out that extra bit of sound or spending time listening to music?  I prefer the latter.

Listening to my system is one of the things I look forward to most, so it clearly pleases me.

Yawn.

Mr. Denney your company sells many products.  I would be very interested to know  your answer to your question?   Thanks. 

The last few posts prove my point, and if that makes me an "angry bird, I can live with that.