I can see this being useful for old MacBooks with little RAM but I'd never used it. Closed apps running in background are like services. I do not need the wind

I can see this being useful for old MacBooks with little RAM but I'd never used it. Closed apps running in background are like services. I do not need the window to be rendered in the background for messages or chat apps. I open them only when needed. Or having a large-ish apps I use on daily basis preloaded in compressed memory. It's just a sensible workflow.