The whole 'point' of science fiction is to entertain by showing something not technologically available in an interesting and entertaining way. You can also incorporate allegory, to make a point or mask your presentation of a political view or situation but it's not the "point' of science fiction or fantasy books, films or TV series <--- They're ALL meant primarily to entertain first.
Obviously the point of all fictional media is to entertain. But there should be a reason you're using a science-fiction setting rather than just a "mundane" one. Most typically it's either to consider scenarios which cannot happen under current technological limitations, or to tell some sort of allegorical story.