Cathy Dutton:

…the more I looked at my old Sass files the more I questioned whether it was adding value to my site, or just an extra level of complexity and dependency. CSS has evolved over recent years and [sic] the problems that lead me to Sass in the first place seem to be less of an issue today.

Lots of great examples in Cathy’s post. While I’m not 100 percent convinced to leave Sass, its days are numbered. CSS has come a long way since I started using Sass in 2012, and while I feel the syntax settled on for variables is a bit verbose, there’s no question it’s pretty powerful.