How is this easier than OSX-KVM? I can't imagine how proxmox is easier (or better for most use-cases I can think of) than qemu. EDIT: Script just immediately tries to apt-get stuff. Nah. Oh lord and then helps itself to editting your apt sources. (All just to get git? How odd.) Before downloading another un-tagged/un-versioned link and excuting it. Nah nah nah.
Proxmox is easy. To me Proxmox is not just a bit but much easier than "directly running QEMU". It's also got ZFS for free working out of the box. I'm not saying it's secure. I'm not saying it's giving you the utmost control. I'm saying Proxmox is the definition of easy.