Yummy! No more VmWare, all my 3 development systems run Qemu and KVM. Machines are managed by libvirt.

Why? Because it is easy, it is a part of the kernel, it is fast and efficient.

Yes, there are bugs. I found one that is related to FreeBSD guests reboot that does not happen to regular Qemu. This is not a show-stopper. I like it :)