Times are changing and more and more people are browsing the internet on hand held devices such as smart phones and tablets and if your website is not well optimized for viewing on mobile phones then you can say goodbye to any leads/customers coming to your website through that medium.
Google places so much emphasis that it has dedicated a whole section on optimizing websites for smartphones on its website for webmasters. It is for this reason industry experts feel that websites which are responsive or have a mobile friendly website will benefit in rankings in the near future. Google is already predicting that everyone will be online by 2020 so mobile will be the next big thing in terms of how people shop online in the next 5-10 years.
So if you are a website owner and have been successfully running an online business for the past couple of years then this is the right time to invest your money in developing a mobile friendly website for your business. I assure you that this will pay you rich dividends in the near future and you will be able to verify that by reviewing your Google Analytics traffic stats.
I do mobile website development and have successfully launched several mobile websites in the past two years and clients have reported success in terms of lower bounce rate and more conversions from mobile phone users.