(Note: Black Fenix defined Zina (Arabic term, apparently) as extramarital sex, and the punishment for it as death)

Zina is a sin not because of honour but because it causes many problems within the community (just look at all the stories where people met there own family members without realising) and with causes a lot of problems with many of the other laws in Islam (Inheritance etc).

You don't know what Zina is and are arguing about this.

Also before you ask I do agree with the punishment for Zina.