As the number of mobile phones climb in number and is used for surfing the net and making purchases, it is imperative that your website is responsive and uses responsive website design.
Numbers indicated by companies in the e-commerce business world put these between 70% and 80% of all online purchases made from websites. As research continues to be more refined in this area, and figures are more accurate, there is no denying that the future will be mobile phones. Google supports this by the fact that it now measures your website page by the mobile view, no longer the desktop view.
The last thing you want to do it make it difficult for your biggest customers and people of all ages have embraced the new mobile technology. Granted some like the millennials are leading the push, even the boomers have adopted the technology and research online.
As mobile devices continue to change with higher screen resolutions and we now have phones, phablets, tablets and desktops not to mention the use of game consoles for surfing the net also, it is even more important that your site will adapt to any screen size, now or in the future.