Brutalism gets a lot of hate, but I suspect it's mostly because the name sounds bad. It's named for its heavy use of unpainted materials like "béton brut" (French, "raw concrete"). It was a style built on post-WWII optimism about making a bigger better future, but everybody hears the name and thinks "Oh, grey dystopia!"
If they had called it Nudist architecture, I bet it would be a lot more popular among folks who aren't architecture and design nerds.