There's this myth, you see, that Windows post-XP is some kind of terrible needy baby of an OS, and if you'd just get a Mac, all those maintenance headaches, they just go away.
Guess what? Neither position is literally true, although as usual there's a tiny kernel of truth at the root of it.
If you say something like "Doze sucks", I'm going to dismiss that, because the fact is that all modern operating systems suck, and pretty much equally; Windows needs antimalware attention or it'll put your nude selfies on the internet, Linux has no useful desktop software for normal people, OS X has no games and you need to buy a relatively expensive and more-or-less-impossible-to-repair-yourself computer to run it on, etc.
My Windows PC has my MS account signed into it, and it's on the internet. I don't run any externally-facing services on it. That's something I would only do - irrespective of platform - with a separate, firewalled computer, because I'm not an idiot.
I'm really glad your Mac is working out; if the hardware were different, it'd be working out for me, too. But I can't justify the spend on the Mac hardware I need to do the things I want to do, and (as I found out twice to my detriment) I'm just too far away from a Mac service centre to make ownership a viable proposition - and I can service this PC myself.
As for whether Windows is an inferior design - well, OS X has two filesystem layouts, one of which is hidden from the user, 40 years old, and has only really made it this far by inertia, the other is simplified and insufficient on its own to make the computer go. The display compositor can't be made to work over a network (Screen Sharing is VNC). The Finder still sucks. The filesystem is still archaic and slow (let's go with ZFS, Apple; get with the programme!) and the OS, SHE LURVE DE RAM. The command shell is, like the filesystem layout, 40 years old.
But that's all OK, because OS X is a stunningly effective OS, despite its limitations; it looks good and feels good, and lets people get shit done, and that's why people love it.
Windows has a robust, scalable filesystem. Remoting the display is WAY better. API access to everything is better. My nerdular programming friends tell me that Apple's API documentation is a bit cack compared to MS's (although they could both do lots better). There's more software of every kind, and yes, that includes The Evul Malware. (BTW, most attacks these days are phishing/soc-eng types, and the Mac offers exactly the same resistance to those as Windows). Hardware support is a no-brainer. Storage Spaces mean I can dick around with my terabytes very easily.
It's not shit, it's not incompetent, and it's not illogical.
I don't have OS religion any more (and I remember switching from Linux to FreeBSD because something GPL something something CVS something something.). I have things in my life that are both more interesting and more important to me than the OS running on my computer - people, things to take pictures of, latterly shotguns and rifles. If in the future Apple produce a computer that meets my needs both digital and fiscal, I'm so there. The trials and tribulations of mega-corporations all of whom don't care whether I live or die - abstractly and sporadically interesting, but I'm not invested in any sense of the word.