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.
Arthur C. Clarke's stuff is like that… So are a lot of the old anthologies from 50s-60s (e.g. the Groff Conklin ones … Omnibus for one - https://en.wikipedia.org/wiki/Groff_Conklin).
The 'Riverworld' series by Farmer and 'Ring' series by Niven are also.