Facebook teaches you about your target audience
Having a Facebook page for your business gives you a way to talk to and get direct feedback from your target audience. Think of it like an ongoing focus group. Your fans are there because they are aware of your company and want to learn more. While they are certainly expecting to receive useful information from your Facebook page, you can also be collecting useful information from them through their participation.
Facebook lets you "humanise" your company
Social connections and genuine communication are integral parts of social media. A Facebook page for your business gives you a unique opportunity to give a face, name and personality to your brand. While your Facebook brand page may be representative of your company, it also allows you to show the human side of your business through one-on-one conversations and social interaction.
Facebook allows you to build an online community
Facebook pages are excellent places to gather together your customers, prospects and fans to provide reviews, share opinions, voice concerns and offer feedback. You can build your own community on your Facebook page in a number of ways, such as educational content, competitions, and incentives. If the Facebook page you create for your business successfully brings people together, you can develop a loyal following that will continue to grow.
Facebook is great for Search Engine Optimisation
Having a Facebook page for your business can be an effective way to direct traffic to your business website. Your posts, links and other activity that are contained on your public Facebook page can also give you a boost in the Search Engine rankings. With the speed of social media and new weight being added to information shared through social channels, a Facebook page that is filled with rich content relevant to your business is extremely important.
Your competitiors already have Facebook Pages
I wouldn't usually recommend taking action in any area of your business simply because your competition is doing it. However, when it comes to social media, not having a Facebook page or presence on other social networks can cost you opportunities, especially if your competition is using social media and using it well. I can almost guarantee the majority of them already have a Facebook page for their business.
Promote your business to customers every day
Perhaps one of the biggest benefits of having a Facebook page for your business is the ability to have status updates, shared links and videos, and other information appear in your fans' news feeds once they "like" your page. Facebook and other social networks make it easy for potential customers to find you. And when they do, they are often more likely to remember your brand and share it with their own connections.