My first couple of computers had AmigaOS and even from the start Windows felt like complete garbage in comparison, but eventually I had to buy a PC to keep up with the times. After that I kept looking for alternative OS:es, tried Linux dual booting but kept going back to Windows since all the programs and hardware I needed to use required it. When I finally decided to go full time Linux, some time between 2005 and 2010, it was because I felt like I was just wasting my life in front of the computer every day. With Windows it was too easy to fire up some game when I had nothing else to do, and at that time there were barely any games for Linux so it removed that temptation. But that has ofc. changed now and pretty much all Windows games work equally well on Linux :)