When installing win from iso the virtual bios only allows a couple of seconds to “hit any key to boot from iso” and then it went straight to PXE where it hung. lxc delete <name> --force
worked. I think I tried to stop it but I don’t think it worked. I’ll try again next time. Maybe the stop command didn’t work due to the vm being in bios pxe rather than the os. I’ll worry about that next time.
For this time, force delete was good enough for me since there was almost zero lost time.
Convenience primarily. LXD handles setting up the storage, networking and configuring QEMU (which can be non-trivial). It also adds remote management through LXD’s REST API, and convenience features such as the lxd-agent which runs inside guest machines to allow quick access to the guest (this is Linux only currently).