My PC has 4TB of NVME storage(2 drives), and then 8TB of HDD space(another 2 drives).
Games, and actual used stuff all live on the NVMEs, with things like Pictures and Videos stored on the HDDs. Plenty of space to never have to really think about what to keep installed.
I also have a 512GB Steam Deck, which also has a 256GB SD Card in it. My Switch also has a 256GB SD card in it as well.
So quick break down is:
OS and programs on NVME 1, this also includes gamepass games. NVME 2 is Steam games and other launchers that might be installed.
HDD1 is downloads, pictures, music and documents, HDD2 is Videos.