Drunk driving is just so unnecessary. Most places will give a designated driver free non-alcoholic drinks for the evening, and most places will call a cab or tow truck for a driver who has had too much. It's just not necessary to drink and drive.
I don't have a problem with felony drunk driving charges. I think they're necessary. What bothers me is that people get their licenses suspended or revoked, and they drive anyway. That happened in my town. A man got 30 years in prison for vehicular homicide while DUI. The newspaper found out he had like, 12 prior convictions and a revoked license, but kept driving. What a shame.