Well, why what? Why do I have to install it? Because there are A LOT of old people in my village, who only ever used windows, and when I repair their stuff or get them new stuff I often have to (re)install windows. And windows is the virus I'm talking about, because IMHO, it literally IS Spyware, Adware and a Trojan. Literally every criteria is met for those kinds of viruses. MacOS is just a lighter Spyware and potentially a Trojan, but can be expanded to be all three (especially a RAT Trojan) very easily. Linux, on the other hand, has only very few, single instances of separate Distros having ads (Canonical/Ubuntu) or Spyware via Telemetry (Also Ubuntu), but not only can Telemetry be disabled, one could also use another distro. Like Arch btw.