Because I left Windows precisely to avoid the kind of shittery that systemd is doing.
It's absolutely no coincidence that the people who have developed the stuff that's brought the most degradation to Linux - systemd, PulseAudio, Gnome's "user has no right to themes" attitude - all come from a Microsoft background or explicitly work for Microsoft.
I'd have far less of a problem if systemd was split into more practical, actually independent things that actually worked and distros didn't buy their snake oil so easily. But for the time being, to me, the systemd experience is pretty much like the PulseAudio experience, what with the whole "waiting 120 seconds for a network interface to activate that it's not going to because it's the damn ethernet port and I'm on the road so the cable is not connected, stupid letter-potter dipshit".