Boy, this is a thought provoking thread—had a flashback of 40+ years of gear and changes. Until recent years, especially active changes last year, my changes were slow and infrequent. I still have a pair of speakers (ok, 2 pairs) that are 40 years old and in a system. The thing that really spurred purchases in recent years was discovery of Roon and remote control of zones right from my phone—that added a few zones aka systems. I’m retired so can now enjoy good tunes in every room that I spend time in, so that got things rolling. Of the things still here, boy, I’d probably stand pat for the most part. I’d say most of my changes were driven by technology and digital streaming, making things like my old Superphon Revelation preamp obsolete. On the speaker end, I bought a pair of BMR monitors (from this forum reviews) for my garage zone. Most of the electronics part of the equation was all driven by technology changes. I’m on my third AVR, only because I had to. First one was an NAD that I think was only 5.1, rotated to the garage when purchasing a Denon with newer tech support, then the current Yamaha because Denon was only 9 channel and no ATMOS capability.