So you want to build a website. You should go with simple HTML or use a CMS like WordPress. The definitive answer lies in the question: "What do you want to do with your site?" Let's look at some of the advantages of each option.
1) Updates - How often do you plan to update the site and who will do the updates? CMS has a supreme advantage over a direct HTML site when it comes to updates. Not only is it an open source platform that allows you to use multiple programming languages, so you get all the bells and whistles (HTML, PHP, MySQL, ASP, etc.), but it's also easy to use for those who do not know The programming code. In other words, if you are creating the site for someone other than an online marketing agency and you want them to be able to update the site itself, CMS gives them the flexibility to do so. Of course, you still need to create something important, but the user will be able to update the blog, add pages and make basic updates without bothering you.
A point to CMS.
2) Bandwidth - Because a CMS offers so much, it's a great platform. This means that it takes up a lot of bandwidth. Simple HTML sites tend to take up less space. But ultimately, the extra bandwidth is no big deal if you are prepared for it - just make sure you are prepared for it!
Half a point for HTML - HTML is smaller and slimmer, but it's not really a big advantage if you're prepared.
3) Plug ins - One of the great advantages of CMS like WordPress is that because many people use this universal platform, new plugins are created almost daily. Instead of reinventing the wheel, find a plug that does what you are looking for and with a few clicks you are in business.
Plugins can be used to add social media marketing, SEO tools, display images, improve security, add forms, embed videos, block spammers and more. Yes, you can do all these things with HTML, but you have to write the code and hope you do not make a mistake in your code by throwing all the code.
A point to CMS.
4) Security - With hackers in every corner, this is still a problem for all websites, regardless of how they are built. However, the advantage goes to HTML in this. It is much harder to hack a site that has been individually coded in HTML, though not impossible. If you go to the WordPress route, it is important to make sure that you keep with the latest security plug-ins.
A point to HTML.
5) SEO - If you are building a website, you probably want people to see it. So, putting everything else aside, this is the most important aspect of your website. One of the great features of WordPress is its ability to integrate SEO into your site. Yes, you can optimize your website with HTML, but you have to know all the important elements of SEO and spend time incorporating each one. Since WordPress was built as a blogging platform, SEO is a kind of built-in (plus there are tons of plug ins to make it even better). You still have to work on SEO, but since Google loves new content and CMS makes adding new content a breeze the SEO advantage goes to WordPress.
A point to WordPress.
If you have been keeping the account, then you know a CMS came out at the top. With its flexibility for design and ease to upgrade, in addition to its SEO capabilities and all available plug-ins, WordPress comes out above. Although not perfect (what it is) as a social media agency, WordPress is the platform we use for all our customers. So, if you are building a website, take a look.