Me!
Ok, it's free, but that's not the main reason why I use it
I use it because it is powerful. I'm using it since 2 (maybe 3) years now and I've seen its great evolution
Of course, because it cost no money, I chose it, but that was the tools that made me choose it, first.
And I'm almost proud of using it
Because now, I can say "I can use a great 3d software with lots of complicated tools!" XDDDDDD