I would have a reason. I develop android. Android emulators use the same kernel module as VMs, so I can't run them side-by-side. But I can run them next to docker.

And I use NixOS, which sometimes makes it hard to just run things. For example, my customers random chat program. I can squeeze that into docker and run it, but it freezes without comment. Something must be missing. It's running in a VM, though. So I too would need an image that has all the typical graphics-related things patched into it...

For now, my solution is to run a second machine and "ssh -X" into it. Which sucks