Having used Sass for a while now, I’d never go back to straight CSS.
Compass is also a great time-saving extension, particularly for generating sprites.
Recently I came across a surprising bug in a site I was building.
Have you ever tried to do something, just to be free of the idea of doing it? Like many runners, I had a particular itch to run a marathon, and if I could scratch it, I might be free of it and never have to think about it again.