Same here. I've been a mac user for about 14 years now but never bought into all the Apple software. Just never cared for any of it. Before that I used Windows and Dos for many years. The reasons I left that behind me are still true: Windows is worse. Much worse. The endless mandatory reboots, the bundled crapware, the instability, dreadful performance, etc.

I had that experience last year when my mac died and I decided to get a cheap laptop. It came with windows 10. Two hours into the process of feeling disgusted with the whole setup (and myself), I installed Linux on it (Manjaro) and have been pretty happy with that since.

It even runs Steam!, which is something that barely works on macs since they dropped 32 bit support. The point here is that because I never bought into the whole Apple universe in terms of software, switching to Linux was actually easy for me. All the OSS tools I use are there. I was up and running with my Linux laptop before I had a meeting with one of my clients the next day. I wouldn't recommend this to non technical users but if you know what you are doing and buy the right hardware, Linux is pretty nice to use these days. And most of the commonly used stuff in companies (Slack, Zoom, Skype, MS Live, Webex, etc.) you can actually get to work on Linux. Snap takes care of most of that and I was able to get webex going with a community package.

I now have a shiny new macbook 14" again for work and I still use the Linux laptop for private stuff. The new mac has the notch and while annoying, you get used to it. But it kind of destroys the case for full screen mode because all that does is replace the menu bar with a black bar. You can't use the pixels for anything else. But otherwise it runs circles around my Linux laptop. Build speeds are about 2.5x better on that machine. The M1 is just a really nice laptop processor. Apple hardware is great. I might another one to run Linux on it if the GPU support keeps on improving.

I use Gmail for probably close to twenty years (2004ish?). Before that, I used Thunderbird and Outlook for work. The last ten years, all my work email has been on gmail as well. So I've never used Apple's offline calendar and office apps that come with Macs. I left MS Office behind about ten years ago. For the same reason the lack of decent alternatives for any of that is a non issue for me on Linux because I can do all of that from my browser. I actually started using Darktable on a mac years ago because it's awesome for raw processing. And of course that runs way better on Linux as this is originally a native linux thing. So, that's nice. And it actually runs well on the M1, which is something I was worried about. No hw acceleration but the fast CPU compensates for that.

The thing I miss most on Linux from my mac is a non Apple product: iterm2. I've not found anything that comes close on Linux. Most alternatives are either too bare bones or just lack UI for any of the settings and are way too fiddly to setup. Kind of sad because you really spend a lot of time on the command line with Linux. But of course there are plenty of adequate terminals for Linux. So, a bit of a downgrade but it works. I have my dotfiles synced via git so, both sides are pretty similar.