Alky...deaths caused by drunk drivers are 100% avoidable.
I'm all in favor of reducing the BAC levels for anyone behind the wheel. 0.04 would be a good place to start, although 0.00 would be better. There is NO good reason to get behind the wheel of a motor vehicle after you've been drinking. I wouldn't complain if the gubmint closed bars, taverns, cocktail lounges, and did away with bars in restaurants.
Want to drink? Stay home. It's cheaper, safer, and you stand a much greater chance of avoiding going to jail.
ANYONE busted for DUI should get a minimum of one year in jail for the first offense...no work release, no "good time," one year in maximum security lock up...repeated offenses carry even more jail time...5 years for second offense, 20 to life for third offense, and life in prison on the fourth. Again, no "time off for good behavior," no "early release," just do the time. The second offense should also carry a permanent revocation of the driver's license and the person should be permanently banned from owning any kind of motor vehicle.
Some folks just never learn. I used to work with a pipefitter who admitted to 27 DUI's in his lifetime. He served about 6 months total for all of them. He treated it like a game.