I don't use css preprocessors and I build ui for really large applications. Funny thing is, developers will take my team's CSS, and abstract them into LESS fil

I don't use css preprocessors and I build ui for really large applications. Funny thing is, developers will take my team's CSS, and abstract them into LESS files. But those compiled LESS files look exactly the CSS files we delivered. Sometimes developers take DRY principle too far. However, there are cases where CSS preprocessors make a lot of sense, such as when you have sites with themes, co-branding for clients where it's better to store attributes in variables.