Personally i have never had one and drove home. Firstly because my dad drummed it into me to never drink and drive and secondly i know how alcohol affects me. I know that after one glass of wine (i know im a lightweight) i would be affected.
If we were going for a meal or something and tiff wanted to have a drink then i would be happy to stick to soft drinks so that he douldnt drive after drinking.

I think drunk drivers are just part of the dangerous picture. What about those that drive with no MOT insurance and even licence!!!!