For me, the nice things about the systemd journal binary log format are: - It's immediately compressed (without having to wait for a log rotation); - It autom

For me, the nice things about the systemd journal binary log format are: - It's immediately compressed (without having to wait for a log rotation); - It automatically rotates when a size limit is reached (no risk of filling the disk with logs); - IIRC, it's deduplicated (repeated messages use less disk space). All of these together means logs can be kept for much longer by default.