KID

75 years ago, humans began randomly gaining superpowers.
Scientists believed this was simply due to evolution. You know, natural selection or whatever? they suspected that there was a specific 'power gene' that one could be born with that would allow their powers to develop.
Now, approximately 5% of the population were gifted with superhuman powers when they reached their teenage years.
Flight. Strength. Speed. Even freaking laser eyes.
These people were the stars of the world, the "greatest thing to ever happen to planet Earth".
Except they weren't. Not really.
Out of the 5% with powers, around 3% used them for mundane purposes and lived fairly normal lives, almost 2% used them to become (for lack of a better word) supervillains, only around 1% became certified heroes, and an unlucky 0.5% did not naturally develop powers and instead had to gain them through surviving an especially harrowing of traumatic experience.
Guess which one I was.