Controversial opinions follow: Nesting promotes bad CSS which exacerbates the problems people encounter elsewhere in CSS (like excessive specificity). Nesting

Controversial opinions follow: Nesting promotes bad CSS which exacerbates the problems people encounter elsewhere in CSS (like excessive specificity). Nesting discourages paying attention to the global scope of the language and we already have many solutions to that problem for those of us who like to pretend the global scope isn't there. Nesting grossly accentuates up front write-time benefits, whilst degrading the later read-time experience, actually making long term support harder.