There must be certain standard for website so web designer can follow that standards and designed built by following this standard performs well in any environment and platform.

Well, responsive web design is the kind of things which includes perfectness in design from different aspect and ensure that your website will work well. whether we talk about user friendliness or user experience or tasting across different browsers, responsive web design covers all things which requires considering for excellent website design.

If you are planning for something bigger, must prefer to have responsive web design for better performance of website on any device and browser.