As someone mentioned upthread, that's fine until some software you rely upon starts using something not present on older versions. It's one of the points that I keep in mind with most "what OS?" discussions, the OS by itself isn't really that useful but what it lets you do is. When win7 +3 year extended support ended that was the time chromium framework dropped support, and when projects using it updated then they would also need to drop win7 support (or "your mileage may vary" territory). I expect 2028 onwards may see another gradual win10 migration wave.

The support you're paying for is security updates against 0-day attacks. Once you stop receiving those then your machine becomes open season for botnets