* at least FF dev tools get unusable with enough variables (and in general, it's not a fun experience to debug which one out of a thousand others is wrong) * e

* at least FF dev tools get unusable with enough variables (and in general, it's not a fun experience to debug which one out of a thousand others is wrong) * efficiency (one less hash lookup, less bookkeeping for the browser) * works on older browsers (or mine ;) * you become a member of the exclusive club of devs that don't believe in turning CSS into a turing-complete language (old fashioned, I know)