The *precise* meaning of your question is unclear, other than your computer is trying and failing to update correctly.
Why should you use windows?
Windows is essential on a computer if you have to use applications that will ONLY work on your hardware using windows. Since you're on a photographic forum, examples would be Adobe Lightroom or Photoshop. If you don't use any windows-only programs then you could ditch windows in favour of Linux, many versions of which just work straight 'out of the box' and come with similar applications to those you are used to using with windows. There are quite a few Linux users here, and we all have our favourite versions (Mint Cinnamon and Mint Mate for older hardware are mine, but also Q4OS is good).
But it may be better/easier to fix your update problem than back up, reinstall & then restore your data.