If like me you find it frustrating to define the same vendor prefixes over and over again. Sure, you might create mixins that help reduce the amount of repetitiveness but when your mixins file becomes a library (or not) you see so many lines of near-identical code and wonder if there is an easier way.
Say you have this (all-too familiar) mixin:
@mixin border-radius($radius) {
-webkit-border-radius: $radius;
-moz-border-radius: $radius;
-ms-border-radius: $radius;
-o-border-radius: $radius;