did you use a random or pre-selected seed?
did you allow friends or play solo?
will you reset chunks to make room for new biomes/terrain features with updates?
what mods did you use?
what difficulty did you select?
what gamerules did you change?
how long has it been going?
Long ago towards the beginning of our relationship, my wife and I had a world in which we found a mushroom island and terraformed it into a lush green place with 2x2 spruce trees.
It was a random seed, but we did look up where the island was. I’ve done some work to trim the chunks, since the latest update handles chunk borders really well.
It has not mods, but has had data packs, most of which are probably broken. The biggest of which is a hammer data pack that let’s you break a 3x3 of blocks. The rest are mostly VanillaTweaks.
I’m pretty sure it was set to normal for villager conversions.
We have phantom spawning off, and 1 player sleeping.
It’s been running for about 5 years with probably a 3 year gap.