When someone says "boiled mushrooms" and another person's reaction is a horrified "YUCK", I just assume it's to do with taste or experience.
I love mushrooms. I eat lots of mushrooms. I have eaten about 12-15 different types of domestically-produced mushrooms.
Some species of mushrooms lend themselves to being eaten raw as a salad component, the 'hero' feature of a salad or just sliced or slivered on their own.
There are a couple of types of mushrooms that enhance flavour and/or texture when they are steamed or boiled.
I oven-bake some mushrooms to sweat the juices in them. I fry mushrooms in butter or oils. Some are salted; some not. Some get a range of condiments; others few or none.
Sometimes I randomly cut (or tear) large mushrooms into rustic-looking chunks for casseroles or stews. Other meals get mushrooms in ultra-thin long slivers.
It all depends!
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Now, I have had some people who have describe mushrooms as Satan's preferred poison. People who've sworn off mushrooms as children or youths. And that's what may have happened here.
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I'm guessing that many of the commentors have only ever tried one, maybe two, types of mushrooms ever. Maybe they are not adventurous nor curious home chefs.
People are different. Please don't assume.