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The SF I read in my youth was generally of the action/adventure type or the social criticism type, or the prophecy of doom type, it seems. Today, except for the non human aliens, SF seems not far from everyday reality, considering the multicultural world we live in and the technology which is, as predicted, rapidly becoming incomprehensible.
It is reassuring to learn that in the distant future, supplies of insulin are still kept on hand, just in case they are needed. You never know.