Because Google wants you to. Google’s mobile-friendly algorithm will be launching April 21st, and will completely change website ranking when accessed on a smart phone or tablet. Google currently uses the same algorithm for desktop search ranking and mobile search ranking; however they will soon separate the two and give preference to sites that are responsive and or mobile friendly.
This has been in the works for a few months now; Google began “tagging” websites on mobile devices with a simple “Mobile Friendly” tag to start to differentiate the two kinds of websites.
This has been in the works for a few months now; Google began “tagging” websites on mobile devices with a simple “Mobile Friendly” tag to start to differentiate the two kinds of websites.