It is free software. If you do not want to use it, use a distro without it. And vice versa if you want it. And if you don't like that Debian or Canonical or Arch a few years back or OpenSuse have switched to using it... too bad, you are not the maintainer of the repos, and if you were an active member of the community with voting power, you were outvoted. That means a majority of people with stake in these distros wanted systemd, and it is their project.
Make your own distro without it if you don't want it. Or use one of the dozens of distros that don't use systemd, or one of the forks that have been made to remove systemd already.