All my computers and devices run some version of Linux:
Three desktops run my favorite Linux distro, Kubuntu. All three arrived with window$ preinstalled; I IMMEDIATELY popped in a Kubuntu disc, wiped that nasty virus (window$) off their hard drives, and installed Kubuntu.
Three laptops also run Kubuntu. One is an HP, which came with window$ preinstalled; see above.
One is an Acer Chromebook, which came with Google's idea of Linux (ChromeOS) installed on it. I TRIED to use it, but was really put off by its need to run/store things in 'the cloud' (which I am not a fan of); plus, I'd put a 320GB hard drive in it, and I wanted to install and run programs, and save data, locally. So after a day or two I installed Kubuntu on it, too. One is a System76 Kudu Professional. It arrived with Ubuntu preinstalled; I am not a fan of GNOME or...whatever that newer thing is called...
I'm KDE all the way...so after a short, SHORT trial, I installed Kubuntu on it, too.
One Kindle Fire HD 8.9" tablet, which I rooted, and turned into a real Android tablet, rather than the limited Kindle it started out as.
One (currently in use) smartphone, a Motorola Moto X 2nd Generation, running Android.
Because of my choice of OSes, this is a virus, malware, adware, bloatware, crapware-free household!