Magic,
One major program is Gnome DE, it requires systemd as a hard dependency.
Again, not heresay, it is stated in several places by Pottering and Kay,
mainly on their own blogs and various iirc's.
http://www.zdnet.com/article/linus-torvalds-and-others-on-linuxs-systemd/
The question people should ask, is not is systemd good or bad, but why are
Pottering and crew making it a "requirement" or hard dependency for so many
programs, and the list keeps growing!
As an example, systemd started out as, and was promoted as a modern init
...however, look at the current list (39 programs):
http://www.linuxfromscratch.org/lfs/view/systemd/chapter06/systemd.html
