If you need to replace every single <command> with "if ! <command>; then <failure commands>; fi": - How readable will your script be? - How likely are you to

If you need to replace every single <command> with "if ! <command>; then <failure commands>; fi": - How readable will your script be? - How likely are you to miss a few checks? - Will you be careful enough to also check commands like "echo" and "rm"? "set -e" makes error handling implicit instead of explicit, and it solves these problems.