As Ken Macleod remarked, "history is the secret weapon of the science fiction writer".
Not every time, not for every story element, but it's an *amazing* toy box that you can borrow from whenever you're stuck for an idea! Because fiction illustrates the human condition and humans get up to some really weird shit, for values of "you can't make that up" weird.
Content Warning
These #history deep-dives by #IsaacAsimov are great reads and illustrate your point about using our actual world for #worldbuilding in #SciFi.