If you have to ask....
;-)
Some people manage to stick with a system for a long time. Others, not so much. I tend to enjoy the different presentations of different speakers, so I keep a few around. I may have a pair in my system for a week, or months, or a year or two. Whatever suits my fancy. But when those speakers are in, I generally don't fiddle around with stuff once they are dialed in, just relax and enjoy. There are some very tweaky audiophiles who evaluate every song or album to see if there's something to tweak better or differently in their system and that's a level of audiophile nervosa, or desire to fiiddle, I'm glad I don't suffer from.I personally don't even need an EQ because I find I can enjoy virtually everything through my system, rather than thinking "is there too much treble, too much bass in this song?" and reaching to tweak.
Still, I can be an obsessive audiophile, especially when searching for new speakers. And it seems my brain can only really devote obsession to one hobby at a time. At one point I moved from two channel listening as my main focus to creating a home theater. Then all the little details of video quality became my focus. And when I thought back on my audiophile obsessions I'd think "Why did I obsess and sweat over all that small stuff?"
Now my interest has swung back to high end audio again. I find myself listening to music as a way to relax far more often than using my home theater. And when I fire up my home theater I just think "this is great, this is fine" and I can't find the same obsessive sweating-the-details that I had when home theater was my focus.
As for two channel, I just don't fool myself that I'll ever be "done." And that's ok so long as I enjoy the journey.