Having a blog is a great way to connect with your customers. You give your website visitors something of value for reading your content. Industries that are constantly evolving respond very well to blogs.
Having a blog is completely up to you. The key is to be consistent and write about something that will be useful and pertinent to your industry. A blog is also beneficial for your website ranking. By updating your website every so often, search engines like Google give more preference to your website within rankings.