Are Desktop Sites Still Necessary? No, Says Googles Mueller | Public Relations & Social Marketing Insight | Scoop.it
You don't need a desktop website, according to Google's John Mueller.

In a Hangout on Friday, Mueller, a webmaster trends analyst for the search giant, said that having a mobile site should suffice. He added that going mobile-first or mobile-only wouldn't hurt a page's rank, even in desktop search results.