Well, now, it all depends on what you’re looking for…
Mind-blowing sense of wonder?
Examination of social issues by extrapolating various trends?
Criticism of a current policy by exaggerating its worst effects to extreme in a “near future” society?
Utopias? Dystopias? Ecotopias?
Galactic civilizations that still inexplicibly but satisfyingly require lots of swordplay?
Murder mysteries set in the future?
Shootout at the OK corrall set in the future?
Future war stories?
The interaction of vast social forces and organizations over centuries?
Humans as the roughest, toughest creatures in the universe?
Humans as part of a peaceful Galactic empire?
Plot problems due to the physics of unusual cosmic objects?
Vast conspiracies triumphant?
Vast conspiracies defeated?
Earth invaded and conquered?
Earth invaded and repulsing the invaders?
Invaders arriving and getting suckered by con men?
All these and many more are available, and that’s without even dipping into the fantasy side of things.
If you can pin it down a bit more, I’d be happy to get more specific, as a Certified Old SF Fart™ who’s been reading and enjoying it for better than 40 years. (Hey, we can’t all be writers; someone has to buy the damn books.)