my first mac was an LCIII that I got from my elementary school to use at home to do school work. Since then, we've always had Macs in the house, as well as a windows computer or two. From a 6300 series to a 6500/225 and a Quadra, to an eMac (ATI) and then MacBook (Core Duo) to MacBook Air (original), along with various iPods (3rd gen, video) and the original iPad til I moved to Germany 2011 and got myself a Mid-2011 MacBook Air.
On one hand, it's force of habit. I like MacOS. I understand what MacOS does and it does what I expect it to do.
On the other hand, I'm well into the ecosystem. I currently have an iPad mini 5, iPhone 11, Mac Mini, and my MacBook Air. I use iCloud to share files between them. I actually use Keychain as my password manager.
On the third hand, I never had any problems with any macs, aside from the MacBook Air. The windows computers always died for some reason or another. The MacBook Air had bad ram and Apple paid for the shipping to them, repaired it, and within a few days I got my computer back, no extra cost. Apple support has always been top notch. I've never had a bad experience with an Apple device.
While I did build my own gaming pc around ... 2014 with windows, I actually got a virus on it. Never once got a virus on mac. Eventually I put Linux on it and gamed with Linux for a few years, but upgrading from elementary OS Freyi to Loki resulted in my loosing all my data (I'm still not good with doing full upgrades of Linux). Even when Linux does work, I always spend a lot of time getting it setup the way I like it (themes, icons, etc.), and I'm usually never happy. Every now and then I want to change something. With macOS I'm actually perfectlly happy with how it looks. Even in early Mac OS X with Shapeshifter, sure I could change the look, I often used
buttosighs/Padma Colors mes/drawning board (based off Apple Japan's drawning board theme for Mac OS 8's appearence manager) or
Max Rudberg's BBX Mercury, or
Takashi Izawa's Shinobi (Rip Resexcellence), but no matter what I chose, I always went back to Aqua.
I've even been using my 2011 MacBook Air for the past 9 years, because it just works. Battery was basically dead from the beginning (I never drained it the first year, so I got no life out of it after that), and I'm on my 4th battery, but aside from that, it's been amazing. I originally wasn't going to buy a new mac, because I didn't want a butterfly keyboard, I didn't want soldered on storage (I upgraded my Air to 1TB SSD). I couldn't go with an iMac, because I have multiple computers and consoles at my desk so I can't have one monitor that only works with one computer. And then I wanted to keep running my 32-bit apps. After lots of thought, I went ahead and bought a 2018 MacMini because despite solderd ssd, Mac is what I keep coming back to. It's solid. It works. And I've had a great experience all these years.