I think Windows 7 was the last version of the OS that wasn't phoning home every time you clicked a button in the Calculator app. That could be a reason.
Well, I didn't know that calc phones home. A power user. A developer. A sysadmin. A niche of all windows users. No, that can't be the reason.
Horrifying. That's exactly why simplewall [0] is among the first programs I install on Windows. Then I block stuff like compattelrunner.exe, devicecensus.exe, explorer.exe, the various Intel / Nvidia driver-related bullshit background processes the first time they attempt to connect to a remote server.