During several redhat releases, the following aliases in
~/.bashrc have been a pain:
alias rm='rm -i'
alias cp='cp -i'
alias mv='mv -i'

Because of those aliases, people get used to type i.e.
rm -f, because they generally don't want to confirm
deletion of every single file.

The effect with rm -f is that read-only files get deleted
without any questions. That is bad.

I delete those annoying aliases on every redhat PC I come
near, and have not had any complaints about that.