>Why does it take others so long to see the same thing?

What thing, exactly? To me systemd has done what it has set out to do and I quite like it for it (not that it's perfect in every respect, but it's in general a welcome improvement on what came before it, especially in terms of consistency between distros instead of a million arbitrary differences). It's also important to note what systemd was offering to distro maintainers, as well. It substantially reduced the work involved in creating and packaging for a distro (though probably only Arch, which is explicitly a distro by and for the maintainers, really said that part loudly).