Because phone books are DEAD. Because you want more customers. Because when potential customers are looking for what you do, statistics say they go to Google to find you. See SEO search statistics and search engine market share that will blow you’re your mind. 86% of web traffic is driven by the major search engines i.e. Google, Bing, and Yahoo.
If your website can’t be found by the search engines, you don’t exist. You might as well not have a website because no one will be able to find you. That means the thousands of local customers searching every month trying to find you, will instead find your competitor(if they have done their SEO). Whether your site provides content, goods, information, or services, search engines are the only method of navigation for Internet users.
Search engine robots have a difficult crawling your website if it is messy and full of coding errors. Google will not rank your website high if it doesn’t like what it sees. This is where our SEO efforts are so crucial. 80% of users don’t go past the first page of Google. Again, if you aren’t page one, you don’t exist. And 89% percent of people use Google to find what they are looking for- not phone books.