[kapowaz]

If your CSS ‘impossibly simple’ then it sounds like you don't need it. Every tool has its place: writing HTML by hand is still worthwhile in certain situations. My article assumes you are writing CSS in a project of sufficiently large scale that how you approach architecting it is important enough to think about.

[pupppet]

There are very few large scale projects that warrant it. Preprocessors save you a few search and replaces, little else. You're left with a stylesheet that is no longer recognizable to its author and can't be debugged via your browser's developer tools.