We tell people we use Linux because it’s secure. Or because it’s free, because it’s customizable, because it’s free (the other meaning), because it has excellent community support…
But all of that is just marketing bullshit. We tell that to non-Linuxers because they wouldn’t understand the real reason. And when we say those false reasons enough, we might even start to believe them ourselves.
But deep underneath, the real reason remains.
We use Linux because it’s fun!