Microsoft's Windows 10 operating system has been available on the retail market for over seven years and was superseded by Windows 11 in October 2021.However, despite its age, Windows 10 remains the most popular version of Windows, with a global market share of 67.95% in December 2022 compared to 16.97% for Windows 11, according to StatCounter.Alternatively, online sites like Kinguin offer Windows 10 Home and Windows 10 Pro product keys for well under $30, which is an excellent avenue for DIYers looking to save a few bucks when building a new system.It's pretty clear why Microsoft is on track to sunset sales of Windows 10; it wants to push as many people over to its current Windows 11 operating system as quickly as possible.Think before you speak…I respectfully disagree with @The Historical Fidelity , and agree with @salgado18If we're going to use W10 for the next 10 years, then we are taking a huge risk in terms of the security flaws that'll ruddle the whole operating system over the years as it stops getting patches for the never-ending war of cybersecurity, and not to forget the compatibility of the many features that come, and software developers will adapt and require your OS to support it."