Welcome in, to the strangest, most diverse collection of individuals you are likely to come across.
Most Science fiction tends towards the "neutral to optimistic" quadrant; certainly, almost all of the older books went for happy endings. however unlikely this might seem now that we're living i the future. Boy got girl, mad professor succeeded in single handedly building starship, overtrowing obnoxious BEMs, of failed to blow up world due to misplaced decimal point (not misplaced exponential; not enough of the readership that didn't need an explanation of what "exponential" meant) and big industry and government were ridicularised.
Much like Westerns with a wider choice of scenery.
Oh, sure, they had some difficult moments in the meantime (occasionally involving the extinction of ninety percent of the human race) but it wouldn't be a story without inconveniences, would it.
Just how sweetness and light do you need your SF, anyway? No deaths or all badies killed off? All the heros logging onto Chronicles and not even noticing that the universe has been anhilated while they were on?
As I said, optimistic.