Good design equals good business
Research has shown that website design can impact customer's credibility judgments. It can boost users' likelihood of believing content; it can influence their probability of trusting the organisation operating a website; it can create a strong and lasting first impression. When competing in saturated online environments, credulity is a factor that increases or decreases a users' willingness to believe, act or buy from you, as opposed to your competition.
Usability means happy customers
When visitors arrive at your website they must see instantly that the website is relevant to their needs and will deliver
their goals as quickly as possible. This means good branding, clear navigation and expertly written copy. Added to this
your site needs to be as accessible as possible whatever platform or browser your visitors choose.