[loo]

An OS has a lot of things to be done downstream of the kernel in userspace.

Having one interface to them is useful.

i respect the BSD hacker style, minimal init ethos.

But man is it handy to have declarative sandboxing in service files.

`loginctl` as a standard for listing, locking, killing user sessions.

`machinectl` as a container / virtual machine manager.

And --host / --machine to remote all of the above.