Not only are you being stupid by drinking, you then become even more stupid by getting drunk and then get just plain retarded by getting in your car and driving and to top it all off you kill someone, someone like that does not belong in society, lock em up forever, good riddance
Drunk driving and muder are very serious crimes. If someone has killed someone else because of intoxication, it's important to make sure they can never do it again. A life sentence will not only keep offenders from repeating, but it will send a strong message to communities that the government is tough on crime.
He should receive a harsh sentence for deterrence purposes, to send a message to others who would drink and drive. But that being said it should not be a life imprisonment sentence. Life imprisonment should be reserved for first-degree murder and rape. This is a form of negligent homicide. The law is wise to make a distinction.
Many people drink and drive unintentionally. They are not aware they have drunk themselves over the limit. Either that or they have convinced themselves that they are a 'good' drunk driver. It is still their responsibility and they should still be punished, but a person who drinks and drives isn't an absolutely evil person. There is hope for their rehabilitation. The outcome of their crime doesn't change that. A person who drinks and drives and doesn't physically harm any person or even property just got lucky. In both cases they were posing the same threat to the public in drinking and driving.
If the pedestrian was jay walking, then it's the pedestrians fault. Many pedestrians who are killed by motor vehicles are under the influence themselves. Usually, speeding or another moving violation in addition to the alcohol causes accidents. We should pay more attention to these other "minor" traffic violations and punish more harshly.
I never understood why pedestrians have right of way anyways. Not only do they waste drivers time but they also put themselves in danger 90% of the time by abusing that right. They should have to wait until traffic has passed or until the road is fully clear to go. Cars are made to be driven not to wait for pedestrians.