If you don't have good protection on your site Documents can easily get lost. Some of those files may be stored on your computer and easily replaceable, but what about the rest of them? If you lose them the first time where will you get them out of again? Especially for sites which have been in operation for a long time, fix hacked wordpress database is very important. Many times sites have made a number of documents and have a lot of data. Recreating that all would be a nightmare, and not something any business owner would like to do.
Also, don't make the mistake of thinking that your hosting company will have your back so far as WordPress copies go. Not always. While they say that they do, it has been my experience that the company may or may not be doing backups. Why take that kind of chance?
A snap to move - If, for some reason, you need to relocate your site, such as a domain name change or a new web host, having your files at your fingertips can save you oodles of time, headache, and the need for tech help.
Another step to take to make WordPress secure is to upgrade WordPress. The main reason behind this is that there also come fixes for security holes that are older making it essential to upgrade.
Oh . And by the way, I talked about plugins. Make sure it's a safe one when you get a Clicking Here plugin. Do not install any plugin just because the owner is saying on his site that plugin will allow you to do that or this. Use maybe, or a test site to check the plugin get a software engineer to analyze it. This way you'll know it is not a threat for your business or you.