Because things are never static for too long!
In the living room: gone are the old Intel Atom-based server, the Raspberry Pi for Kodi and the old Intel Core 2 Duo laptop for Roon server. All the services those machines provided are now aggregated into a "less old" Intel Core i5 laptop. Power usage and administration costs will be lowered, with improved all-around performance.
In the bedroom: gone are the Rotel RA-820BX integrated amplifier and the Musical Fidelity V-DAC V1. They are replaced by the Raspberry Pi liberated from the living room, equipped with a HifiBerry AMP2 DAC and class D amp combo (negotiated from another project). Less space and electricity used, and such an improvement in audio quality!