I made the switch to Linux on my gaming desktop 7-ish years ago, but I still had a relatively new macbook at the time and no reason to toss it. I thought I might need it for some proprietary software, such as updating the firmware on some gadget, but I never did. Apple recently decided to stop shipping OS updates for it, so now I'm 100% Linux as of this year. Thanks, Apple!
Linux
Cheers brother! I've been windows free for 2 years straight, I used Linux for 4 years straight in high school before I got a new computer as well :D
Congrats! I am also using Linux 'fulltime'. I've been using computers since MSX and finally abandoned Windows as my primary OS in 2005. At work, I always keep a Windows machine around since we have an AD domain and have to keep supporting it, but Linux is great, even more so in the last 5 years when games are running 'almost' effortlessly.
If I can make a suggestion, check how you can contribute to your favorite distro. I've been helping out on Debian's pt-br translation team and it's very satisfying. I strongly recommend it!
I've made a couple contributions to a program I use a lot (xournal++). I've got lots of personal projects though and setting up a dev environment is a bit of a hassle. I have heard docker can by useful for that though so I might look into that for the future.