This is the very initial thing that is going on in your mind and here is a proper answer to that, which you will never get from elsewhere –

You will need the space for your blogs, the designs and the templates that will help you put your blogs into categories, add tags to them for a better finding and also the blog order display so that they can be seen affront in your site. All these are available in WordPress and in fact, there needs no expertise to handle them as well.

The second thing that comes into your mind, when you think about a blog is SEO. WordPress do the SEO of each of its pages individually. Hence you need not have to pay anyone for the same. There are some of the plug-ins too in order to help you nourish your contents for the SEO purpose, all under the same umbrella of WordPress.

The third and the very vital thing that you will like about the WordPress is its easy interface. You need not have to go for any other platform for working on the C-panel of WordPress. You can edit the site of your own from the frontline and hence is the ease of working with WordPress.