Much of it is different tastes, yes. (I’m not one for neutrals, myself — I have a tall Victorian house with strong, often dark colours, which wouldn’t be for everyone or every space).
But I think there are some, and I suspect the OP is one of them, who don’t have an eye for what things/colours/ finishes work or don’t work together in a space.
She has a room she thinks doesn’t work, keeps saying she doesn’t like the neutral suggestions made by some posters and says they’re ‘bland’, but her own room is currently far blander than any of what’s been suggested.
When people pointed out that her bedside lamps were wrong for the room, she rejected some suggestions and posted instead a blingy diamanté effect lamp that wouldn’t work with anything at all currently in the room except the bed, when she’s said she can’t afford to do a complete redecoration.
OP, it might help if we knew more about your taste. What about posting a photo or two of bedrooms you like the look of?