Earlier quoted context omitted.
> The popular preparation used to be boiling or steaming, and many people still find that gross with modern varieties. What is wrong with people? They're delicious, and an absolute must along side a reindeer roast with a creamed mushroom sauce, or similar. Steamed of course. Though I did learn the hard way as a kid that they can be rather harsh on the stomach when raw...
What's "wrong with people" is they don't like eating poison. You can train yourself to like anything, but the bitter alkaloids that give brussel sprouts and such their nasty bitter taste are indeed a toxin. There isn't enough to be dangerous in modern varieties, but there was in their wild ancestors.
So I had a hunch it was like cilantro, and seems there's indeed a genetic reason[1].
So fair enough, if they taste bitter I'll accept it's not a nice side dish.
[1]: https://www.compoundchem.com/2014/12/04/brusselssprouts/