Office is important only if you want to use the programs that are in it. If you plan on using any of the applications in office you need to get it. The templates they have are endless for everything from writing letters or even just making a list of Dvd's like I did for the boxes and boxes of movies we own. What is available in office is not available on Windows 10 in that Windows is an operating system. Office is like putting an app in your computer to make you computer do the things you want to do. I always have office in my computer so I can use it when I need it. Go online and check out what Office can do, and what different programs are in it. It even includes a free email service called Outlook that is excellent.