Ive never drank and drove, but on the same note Ive only had my license for about 6 months. Im %100 sure that I would never drink and drive, besides the fact that I hardly drink, I rarely take risks of that sort.

As far as people being held responsible if they kill someone. Its a tough call; you can do some stupid stuff when your drunk. If you plan to drink and drive before you start drinking and you kill someone you should be held fully responsible. If you get drunk and drive as a result, well, I guess its a little harder to call there. This topic has a whole scope that can be covered so Ill just state my opinion as being - If you do the crime you do the time -

/m/