Good website design builds trust and authority – Your web visitors stay longer.
Good web design will help you to build good relationships with your web site visitors. Research shows that 38% of web site visitors will leave your website if they don't like your website design. By having good content with well structured websites, you can keep your website visitors to stay at your website longer, which is good for more leads and SEO ranking. When your website visitors stay longer at your website, these give the signals to the search engines that your site is useful and worth ranking in the SERP. Search engine robots are trying to mimic the user experience of your website visitors. If you have a poorly designed website that's hard to use, your website visitors are going to leave. Search engines can pick up on these signals that the users are leaving your site and drop your rankings accordingly.
Other critical factors that impacts a website's appeal are loading speed, navigation, legible font size, or currency of site design among others. Therefore, your web designer or web developer has to embrace good web design practices to keep both human users and search engine crawlers to engage your website.