it is so easy to say that specially if you only use your computer to perform pretty primitive tasks such as surfing the web or playing a game. otherwise there are many cases where you want to work with a professional application that only runs on windows.
for instance there is no IDE as power as Visual Studio for Linux. there is VS code but that is only an editor not an IDE. there are a lot other applications that are the same too which means many users are stuck on windows even if they don't like it.