The Internet is dynamic, it changes every microsecond of every day and doesn't wait for any business to catch up. Your business needs to be in a constant state of virtual flux if you want to keep up and WordPress lets you do this.
By utilizing a few (or a few dozen) plugins, you can make your site do anything and update it any time, even without a web designer. The set-up of WordPress is surprisingly easy, so easy in fact, that we offer it as an option during sign-up with any of our Shared Hosting plans: HostArmor.com/shared.html
If maintaining updates isn't your thing, we can keep a watchful eye on every facet of your site using ArmorPress™: HostArmor.com/armorpress.html
You can run a blog, gallery, and event calendar all from one place with WordPress, or you can start a forum, a social network, a guest post blog, anything! Chances are, if you need something on your site, there is already a WordPress plugin, theme, and documentation for it.
Also, just in case you need convincing, almost 1/5th of all websites on the Internet use WordPress in one way or another. At the time of posting this, 13,739,414, people have downloaded version 4.2: https://wordpress.org/download/counter/