Let's say, "hypothetically," a person with a blood-alcohol level of nearly twice the legal limit and with marijuana in his vehicle speeds down a highway without wearing a seatbelt and while talking on his cell phone. He crashes into a tow truck that's helping a stalled vehicle and dies. Whose fault is it?
Naturally, the bar, the towing company, the tow truck driver and the person whose vehicle stalled must be at fault.
I can, perhaps, understand suing the restaurant that allegedly kept serving the deceased alcohol for more than 3.5 hours--even after he was already intoxicated. (Although is it really the restaurant's fault that the deceased chose to drink and then drive?)
I don't mean to be harsh, but perhaps this apparent unwillingness of the parents of the deceased to blame him for his actions is part of a pattern; perhaps if the deceased had been taught to take responsibility for his own choices, he would have made better ones. And perhaps he would still be alive today.