Which is totally ironic too in that the server-admins hate it. (speaking just for myself here=) )
I am a sysadmin of a medium sized data-center. I am in charge of 100-150 servers at any given point. None of the changes that systemd 'fixes' benefit me or my systems. Boot times? What's the point when it takes 10-minutes for the drive-arrays to spin-up? Logging? I pray a system never dies and I have to access those rotten binary log-files from a live-cd. Network changes/configuration? Nope, every server is configured with static network configs. Power Management? Ha! That's funny. Downtime in minutes costs more then electricity does in a a month.
I could go on. But there is one major caveat: As a laptop user, systemd is fantastic.
As my Debian servers need to and/or get updated and start requiring systemd then I will just migrate them to OpenBSD. This process has already begun.
Systemd is changing things for the wrong group of people. Mobile/Desktop users have alot of wiggle room and areas that need improvement. Server admins need stability; in software, hardware, (script) syntaxes, and interfaces. Users need everything that systemd offers.
I will concede that systemd might be a good fit with Docker, and I am looking into that too; but I guarantee you it will be on it's own box and not homogeneous with the rest of my network.