The goal of SEO is to help your site pages appear higher in search engine results pages (SERPs). When your pages rank highly, users will see your website above your competitors and be more likely to click on your content.
Matter of fact, over 25% of people click the first Google search result — and clicks become fewer as you get to the bottom of page one (and even less on page two).
That percentage alone shows the importance of ranking high in search engines if you want to increase website traffic — and SEO can help you do so.