A mobile website is not just a concept. It is a mainstream reality! Creating a mobile-friendly web design is the latest trend because the numbers of mobile web users are rapidly growing. Optimizing your website design to suit mobile users’ screen will greatly impact your business ranking and search engine results. You will be able to reach out and communicate effectively with target audiences.
Desktops are not the leading web access device anymore. Because most people are using smartphones such as iPhones and Android in accessing the internet, online business owners must take advantage of the unique opportunities mobile-friendly web design offers to the growing number of visitors on the web.

source:  https://www.utahsites.com/advantages-of-a-mobile-friendly-website-infographic/