There are multiple searches each and every day for exactly what you offer. These people are looking for the solution to their problem, the solution that you offer. They are describing your business they just dont know who you are. SEO gets you in front of those people who are looking for exactly what you do. By making your website show up for the terms that describe exactly what you offer those people convert at a much higher rate than any other form of marketing. Everyone wants inbound leads SEO delivers them.
If you have never been on the first page of the search engines you cant imagine what it can do for you. There is a reason you are here, you know you need SEO, you just might not understand the importance it has for your business. You have already spent the time and energy to build your business, SEO can help you take it to the next level.