Have you seen a site without links? There will not be a site without links. If a site does not have a links pointed to it we can say that site is almost a dead site. If we do not have out bound links it wont matter but we should have inbound links. Even a site with best content isn't worth much when there are no inbound links to it.So, after building a website it is important it appears high in search engine rankings.

The best way to get good targeted visitors are search engines. Many visitors to the web site come from search engines. The most popular search engines use link popularity in their ranking algorithms (how sites are evaluated). Improving link popularity moves sites up in the ranking and a high position in search results. Back links play a very important role in the search engine ranking. You also must have quality links to make the search engine take notice of your site. No quality links means you will never get a high ranking.