Hi-Fi wise or other wise, do you pursue certain object(ive)s and envision at x point you'll "arrive", is it all just a state of mind or....? (fill in the blanks).
Perpetual happiness is a myth, peddled by the media and sales world, that does not exist in real life.
"Happiness" due to a new acquisition is a fleeting honeymoon, that will pass once your brain gets accustomed to the new input and starts detecting the flaws.
We live in an imperfect world as imperfect beings. Whatever we do, whatever we own, we will always have to compromise on some level.
You can choose to be content with what you have and give the relentless and endless pursuit of "perfection" the middle finger at any point.
Given our current technology: getting "close enough" to perfection doesn't take much in the audio world unless you are trying to re-create something that is physically impossible like the sound of a concert hall or live venue in a small apartment living room.