Most of my writing comes from challenging myself or accepting a challenge.
The opening paragraph for "Strange Awakening" was the result of a challenge on another site; don't remember the challenge any more but the paragraph stuck with me for months before I had a story to back it up, and even longer before I shared it anywhere.
Jack Diamond (Diamond in the Rough and, in the not-too-distant future, Blood Diamond) was born out of asking "Can I create a noir detective in a super-hero setting?"
Some other stories I have that I have not pushed out were:
"Can I write a romance novel?"
"I have seen Isekai/System stories set feudal Japan, dynastic China, and medieval Europe, could one be done as a Western?"
"Can a mummy be used in the same way vampires and werewolves are overused, and even Frankenstein's Monster has gotten into the act now (as a hero or romantic hero)?
So, not out of SPITE but out of a "what if/can I" question.