I know this is a joke/meme, but I sincerely think of the Roman Empire a surprising amount of times. I find myself obsessing over how Roman citizens were living just as complex lives as we are today, or about Marcus Aurelius’ life and philosophy, or about how the Republic fell and became a totalitarian state.
Once every few weeks or so, usually when something comes up online or on TV set in Rome or round the time period involved. Rarely pops up in my mind unprompted.