I actually switched to free software because of Trisquel.
Back in 2010, I discovered it one night. I don't remember exactly how, but I think I was looking for Ubuntu-based distros and this one caught my eye. So, I installed it on my laptop.
Mostly everything worked, with the exception of 3D graphics (ATI). I was curious as to why this was the case, so I started looking into it and figured out that most GNU/Linux distros aren't fully free software. This intrigued me and I found myself using Trisquel more and more often.
After a while, I switched away from Trisquel to Parabola due to some issues that I was having with it. After that, I had completely stopped using nonfree systems on my desktop and laptop PC's. I had removed Windows on both.
Now, I use Parabola 100% of the time on both, no nonfree OSes installed. I do have a Galaxy Nexus that I use daily that runs partially nonfree software (CyanogenMod has proprietary binaries, but I don't use the proprietary Google Apps, I use F-Droid instead). I can't install Replicant on it because it's a CDMA Galaxy Nexus, and Replicant only works on GSM variants for now. I do hope that a CDMA port of Replicant gets released at some point, as switching over to a GSM GNex would be very impractical for me.
