If you’ve never had a reason to not use it, then it’s fine to continue using it. Systemd has been shown to be more or less stable, fast, and secure. The reason I don’t like it is because it makes simple things really complicated. Some examples:
Distros that use systemd init also seems to prefer using other systemd components as well. So you can get caught in weird situations where one task is spread across two different systems (e.g. systemd timers vs cron, systemd-elogind vs acpid)
If none of these sound familiar, then switching to a non-systemd distro likely won’t make your life easier. But if you do, then it might be worth considering.