Systems over $100k

I suspect the upgrades for most of us won't end until we age out. I know I'm done building my last system, I have nothing to complain about as to sound quality, no reason to start over.

My sense is once you've settled on amp, preamp and speakers you're in good place. Sources and tuning are enough to keep one occupied, and having settled on vast majority of inherent sound qualities playing at the margins completely satisfying. Optimizing my streaming has totally reinvigorated my interest in discovery and experimentation. At some point this too will be settled, already have plans for vinyl side upgrades.

I suppose if one's into modding and tuning there's never an end point, system value has no bearing on this. Again, it will likely be age or death that imposes static system on me.

@infection I try to never say never, but as I mentioned I'm aging out of another rebuild of system, and my planned upgrades and mods with streaming and vinyl setups means basics will likely never get changed.

I mod cars and motorcycles in a similar manner to my audio systems, the bikes and cars always come to endpoint, can't say the same about audio, at least to this  point. I guess the mere thought of starting again with new amps, pre's and speakers is too overwhelming, I'd feel too much at loose ends.