In case you're mad at yourself for closing your precious window with all the right tabs opened, note that Firefox allows to reopen recently closed windows
I generally have a "home" Firefox window with my most used tabs pinned. Sometimes I close it before another window, so I was frustrated to "lose" it and having to redo my pins. But recently I discovered this feature. Joy!
I have at least one Firefox window open on each of about five workspaces, each with anothing up to twenty or thirty tabs open. It's not insanity at all, no way, not at all.
What's that nurse? It's time for my dried frog pills? Well ok then.