systemd is complex on first view, but after using it you didn't want to use anything else. It's handy to manage everything using systemctl

I hard disagree. Previously I could use what I knew about Linux commands to read logs and administer the systemm. Systemctl knowledge does not generalize.

I have done scheme all my life, which is why I prefer shepherd. Not only is it in a syntax that i can use elsewhere, I get completion in Emacs.

That and systemd having actually useful man pages.

Some people see it differently. As in: after using it they don't want to use it. I hate systemd with passion.

But that's because I'm old because obviously systemd-* is the only right way and everyone else who see things differently is a pundit.

This is such a modern view. People used to HATE systemd when it first came out, but I always liked it and knew people would eventually come around and its nice to see they finally did!