Chromebooks are great. I can create websites using Wordpress, Joomla, or any of the free tools available online. However, my Chromebook is not quite as robust as my 2008 laptop. There's no reason to just accept that the devices might break, and I protect my laptop with a hard case. If you are interesting learning more about cases and covers for Chromebooks, then check out ChromebookCovers.com.
There's no reason you should treat your Chromebook as disposable. In fact, there's no reason to see your covers or cases as disposable, either. Many of these cases or covers can be reused in some way. Most of them will protect your Chromebooks to some degree.