Convenience. If you have printed business cards and have a stack of them sitting on your counter, think of a website as your new digital business card. If a customer misplaces your printed business card then they can conveniently find you when you have a web presence. They will be able to get even more information about you and your business that could never fit on your paper business card. Just imagine if someone asks one of your customers for a recommendation. Don’t you want to be the one who is recommended? It would be great if your customer said, “I don’t have their business card but you can visit their website!”