Because Qubes is awesome.
I used to run a bunch of VMs via KVM/Qemu/Libvirt on an Arch Linux host. I chose Arch Linux because they have the best wiki. And the Arch Distro is truely bleeding edge. It’s like cloning the developer’s repos and compiling their stuff as soon as they have pushed a new version. You learn a lot about linux if you use Arch.
Anyway, since I worked with VMs a lot I decided to give Qubes a try. The way Qubes utilizes XEN isn’t as versatile as KVM, however, I love it’s implementation for networking and templates. For me the security enhancement resulting from this architecture is just a useful side effect. Performance is pretty decent considering you are running VMs.
Debian really is the old aunt, but Fedora is doing fine. And @unman gave us an Arch template. Niiice.
I’m looking forward for sys-gui
and hope that support for HVMs is going to improve. For instance it would be cool if you could insert a sdcard with RaspiOS (arm64) and run it. KVM/Qemu and other virtualization software like Virtualbox, Parallels and so forth can do that, XEN/Qemu should be able to do that as well.