I don't trust anyone's opinion, for or against, unless they've used alternatives. I've used systemd, I'll probably use it again, and I'll keep hating on it if someone gets me started. Fortunately on my own systems I've been a happy OpenRC user instead.
I've used both (OpenRC and systemd). I like the simplicity of OpenRC and still uses it on a few servers running on Gentoo, but on a laptop/desktop I think systemd is a better fit, having user services with user level logging for example.
