The most recent reason I found to hate systemd was it replaced my system DNS resolver with its own (thus requiring me to modify /etc/systemd/resolved.conf, and doing the daemon-reload-service-restart-hokey-pokey, to get a host to function on a network+VPN like it did before). The only reason systemd has its own resolver is they wanted extra DNS functionality. Did I ask for these features? Did I want a new resolver? No. But that's the whole idea behind systemd. A few devs shoving complex features down everyone's throats, just because they felt like it. Operating system fascism.

But I don't think we should be angry at systemd developers; they can develop whatever they want. I'm mostly angry at the distributions who opted in to their crap. Systemd has not made my life easier, but it has often made it harder, and the only reason that happened was because a distro allowed it.