Why are CD-key grabbers considerred warez???

I don't understand why my other topic was closed. It seems to me like CD-key grabbers are ok, since they are used to retrieve information that one SHOULD have access too anyway and used to have, but not anymore. I bought the game, so why shouldn't I get to know my CD key just because my friend has my case and won't give it back? CD-key grabbers only get information that you already had when you installed the game, so why are they do bad?

They are not actually WAREZ but HACK instead. Some things we need to keep in mind:
1) The DEFAULT Blizzard idea is to avoid the user to have acess to the CD-Key. Any attempt to grab it may be considered EULA violation. They have their own pocedures if you lost your CD-Key and want it back.
2) I´m sorry to say this but, it´s not our problem if your friend has your case and does not want to give it back to you. I suggest you to talk to him or go to the police if he does not want to give it back at all.
3) I believe you´re saying the truth but the fact is: We can´t prove it. Cd Key Grabbers CAN BE USED to steal someone else´s cd-key and we do not want this to happen.

I´m not going to start a war here. I´m just saying this is not the place for this kind of stuff. Take the real life as example: as supermarkets don´t "sell drugs" we don´t accept cd-key grabbers.