"git rm" could be safer and have a better help msg

I often need to remove a file from Git but leave it as is, changed or not.
The only safe way to do that as far as I know is:

    $ git rm -f --cached myfile   # many thanks to @jast on IRC #git

The "git help rm" command yields copious information but nowhere can I find
a clear statement about safely removing a modified file from Git without
removing it from the file system.

I am going to create an alias to help me, but I believe the brute force
removal should be a different option, say, '-F' ('--Force'), and the
existing '-f' ('--force') ought to be safe operations as far as the file
system is concerned.

Best regards,

-Tom