Honestly, you continuing to say that it is pointless only proves that everyone else here has been in IT longer than you have and they know more about keeping accounts and a network secure.

Just like josmyth said in the valid point that he made above you, its just a matter of time. Like I said before, if a hacker discovers that someone is being lax about changing their password every so often, then YES you are screwed if he decides to throw some hacks in that persons direction