Mac's dont have Registries to get filled up with sh!te and the dont suffer from DLL hell from every app installing their own bits of crap through out the Windows and System/32 folders.
MacOS does actually have it's own DLL hell issues, do a google for it.
MacOS doesn't have a registry, but apps do store their settings and other files on your hard drive in areas that don't get automatically deleted when you delete the application.
You can argue that the issues aren't as bad for various reasons, but the main reason is because MacOS isn't used in the same way as Windows. If MacOS and Windows changed placed then you'd get all the same bloatware and crap being installed on your Mac, but it's just not worth anyone's time right now.
You only have to look at how Apple touted that you didn't need virus protection because MacOS was secure. Well it wasn't, it was just that nobody was writing virus protection software because nobody could be bothered to write virus'. As soon as MacOS was the first to be taken out at pwn2own Apple had to actually admit there was a problem and start doing security audits.
You could just as easily argue that AROS was better because there hasn't been a single virus or malware for it. However without memory or access protection it's as vunerable as you can get.
Windows isn't perfect, but you can't say that an operating system is better than Windows if it's not actually meeting the same objectives as Windows. If another operating system meets your requirements and works in a way that you prefer then I'm happy for you, but I have very good reasons for staying with Windows (and up until 13 years ago I had only ever owned a commodore 64, amiga 500 & amiga 1200).
