Linux is the main operating system that we use. We believe it is also the best by orders of magnitude.
I have been a registered user since at least Mon Jan 19 19:12:20 MET 1998 as documented by the internet [1].
We have used proto-distributions and debian at a fairly early stage with some period through knoppix for its outstanding material support, until converging onto kubuntu.
Installing linux is (usually) easy.