I have a bunch of my development software on my SSDs, Substance and Unreal are awful running on a HDD and I need to have multiple version of Unreal installed because I have to do support for my marketplace assets, even with minimum install its still reaching 200gb. I could fit games on them, but they would just take up more space than I'm comfortable with. My board only has 2 NVMe slots, and my GPU makes it hell to swap them since it covers one slot and the clamps are in the worst place. I'm also full up on hard drives in my case. I have a SATA that I install smaller games to, but I try to avoid filling up my SSDs in general. Perhaps I'm just autistic about my storage usage.