I stumbled across this blog post that offers a nice selection of potential science fiction story ideas. There are several good ones in there, and one in particular stood out to me. Check them all out by following the link below, and I’ll post my favorite right under it.
20 Sci-Fi Story Ideas (from The Write Practice)
My personal favorite:
12. Ten years from now, scientists figure out how to stop human aging and extend life indefinitely—but every time someone qualifies for that boost, someone else has to die to keep the surplus population in check. Oh, it’s all very humane; one’s descendants get a huge paycheck. Write from the perspective of someone who just got a letter in the mail saying they’re the one who has to die.