--help is fine, but almost never a substitute for a full man page, except for the most trivial of applications (unless your --help is as complete as a man page,

--help is fine, but almost never a substitute for a full man page, except for the most trivial of applications (unless your --help is as complete as a man page, in which case... good on you for providing full documentation, but I'll hate you a bit every time I unthinkingly drop two hundred lines of text in my terminal.)