Why Do I Use It?
There are more reasons to like Bootstrap than just the three reasons I provided above. Ultimately, though, I like using Bootstrap because someone carefully designed a framework that is both re-usable, extensible, and provides sensible defaults. If you haven't used a CSS framework before, 2013 would be a year to try one. If nothing else, you can learn how to better organize and design your own presentation rules.
Above is a static infographics. Please click here to get to the interactive infographics.