Nobody cares about collateral damage, do they? No, they just see the boy in blue and start cheering. Nevermind that he could have stopped Grod's rampages years ago if he'd just snapped his neck, or lobotomized him with heat vision, or thrown him into the sun. No, he has to let them live, so that they'll keep him entertained, give him something to do to look like a hero but all you see is the news footage of him throwing a bus at that gorilla and the brief flash of your wife's face in the window of the building behind him before the bus smashes through the wall. You've watched that video a million times now. It hurts like new every single time. You're going to make Superman feel that pain.

And with [top secret research/dabbling into the arcane/contacting eldritch forces/experimental super serum/advanced robotics/chance encounter with a genie/sudden psychic powers beyond comprehension/insert your villain origin story here], you'll finally have your chance to take down Superman forever!

Feel free to use this prompt or substitute your own, but the end goal is the same - get revenge on Superman.