Every web designers common motto is user experience, and the user always opt for easiness. Hence updating the website according to user satisfaction is a must in this competitive technological world. Otherwise, someone will occupy your place and enjoy the fruits of the plant which you have planted. Nowadays it is not so hard for a techie to gain from other websites without any copyright issue, it all needs a creative brain.
So, getting the user experience and redesigning your website to make it more approachable, easy and attractive is the main task to maintain a website. Also redesigning your website in to simple or easy one does not mean that you can leave the complexities aside.
In the words of master mind Steve Jobs, design is not what it looks like and feels like. Design is how it works.
For instance, take Yahoo which redesigned its site to be scalable to all PCs, laptops and mobiles. It has mainly focused on personalization with more multimedia options as well as Ajax interface. The new features like enhanced search box, news content, personal assistance and other customization options has brought drastic change not only of look and feel but also in terms of working.
Also there are other reasons to opt for a redesign of the website. The first thing, it could have become old or you may have bad user experience, else the site could have design related issues. At this juncture, it is better to redesign your site rather than brain storming on the new idea. Because already you had the feedback from the users and you can expect what corrections to be done to make it more interactive to the users. Finally for better output, present trend research is a must with competitive analysis.