I had used windows for decades prior to that. Never been a windows admin professionally, but definitely new my way around.

I've had my desktops with reasonable uptime as well, but it was on win7 (and probably 10). However, system uptime is not everything. Things running within that system have to keep running as well and they don't.

I think thr closest comparison I can give is upgrading speakers - you can't really tell a higher quality speaker plays your music any better until months pass, you get used to it and then hear the same track on a previous set. It's night and day.

I started dual booting Ubuntu and Windows when I was 19 or so and when I'd go back to my Windows partition to do something I realized I had either forgotten or never learned a lot of how to navigate it. I opened it and went "Where is my terminal?" and then remembered cmd and started using it to look for a directory before remembering that's never how I'd done things on Windows. It was an odd experience.

• You're right about hardware - sometimes it just is dodgy. But a tiling wm is a tiling wm.
• Developers looking after their laptops? That's asking for trouble. They know enough to be dangerous, but not enough to dig themselves out of the holes they're creating.
• I've never made linux as part of my personality - I've discovered it. We naturally lean towards things we're good at and get good at things we lean towards. I'll (hooefully) never initiate preaching of linux and its userspace, but if a conversation happens to go that way - I'll happily chime in.

Have a nice day!