I'm sympathetic, but "bad script" is an awful assertion.

We are all guilty of making bad scripts, bash is a disgusting degenerate language (and I love it). The way we learn to write good scripts is by writing bad scripts in enough amounts to get bitten by all the warts.

One thing I really love about cron, is that if you set up mail on the server (which: you should btw), then cron actually sends emails if it sees anything in stdout and stderr.

I am a dyed in the wool systemd non-believer, but I really do like the timers.