I recently built a new website from scratch after about three years working in other software areas. Found to my surprise that I came back with some very different opinions about how CSS should be structured than I had in my web dev days, and I didn't end up using SASS at all. Still think the code ended up cleaner and more modular than what I wrote before using SASS. The only feature I really missed was @extend, but making the code I would have put in the % selector an actual class and using that in addition to a specialization class in the HTML worked well enough.