You Don’t Need a UI Framework
smashingmagazine.com
smashingmagazine.com
I just dislike frameworks doing "something" that still needs manual adjustment half of the time, while the resulting css is convoluted and unreadable.
The good thing about writing your own css is that you can structure the stylesheet(s) in a way that makes sense for the project, and you can get quite fast with it. The CSS for a typical small website takes me roughly half a day including mobile and desktop variants.