Windows XP is, of course, the antithesis of a strong and stable operating system even when it doesn't have a malware infection
Seriously? For its day, nearly 20 years ago, it was a fine operating system. So good, in fact, that people stayed on it for as long as they have for one reason or another. Is it strong by today's standards? Of course not. But it got the job done for a lot of years for a lot of people. So ease off, eh? :)