I was an Apple user since 2008 until 2018, when I finally switched to Linux full time. At the time of my first switch attempt it was 2014, but I didn't realise how finely ingrained Apple's OSX workflow was in my mind. I had no problem finding replacement apps, but what was hard was using them and trying to build a comfy desktop environment. Essentially it took me from 2014 til 2018 to transition from OSX specific software to fully open source CLI apps. These days I run Arch and the only GUI app is Chromium. Not counting my i3wm and the lemon bar. It was a fun journey with with some challenging moments!

I've had at least 10 situations where Facebook or YouTube recommend me an ad or video based on a real-life conversation which took place around 1 minute before.