Which sci-fi titles (movies, books) do you consider comforting, cozy, something you come back to from time to time? For me, I guess it is The Matrix. Still holds up to this day, gets better with every re-watch, and gives me a sense of peace when I need it.
I remember watching it back in the days. Some of the "parts" were a bit too weird (especially the animation) for my taste, but yeah, I enjoyed it overall.