You must live a very sad and distrustful life if your reaction to everthing you don't have personal experience of is that it's "bull****"
Presumably you wouldn't believe elephants have trunks unless you'd seen one with your own eyes
Fyi [and presumably Googling it yourself was just too much hard work - much easier to tap out "bull"] here are some sources
http://www.niaaa.nih...ollege-drinking
http://www.collegedr...ntbrochure.aspx
http://www.collegedr...kForce_TOC.aspx
http://www.collegedr...0.aspx#hing2005
Maybe you need to be reminded now and again that you live in a society. Your breathtakingly cynical response "That's Darwin sorting out the heard" so why should I care?, apart from being callous, ignores the deaths and injuries caused to all the others by those drink drivers: passengers, pedestrians, and other road users. Never mind their distraught families and friends.
"Beyond the personal cost to the individual, society as a whole also pays. Half of all persons who die in traffic crashes involving drinking drivers under the age of 21 are people other than the drinking driver (NHTSA, 2003). The social costs of underage drinking are estimated conservatively at $53 billion, including $19 billion from traffic crashes and $29 billion from violent crime (Pacific Institute for Research and Evaluation, 1999)."
[source US Dept of Health and Human Services "A Comprehensive Plan for Preventing and Reducing Underage Drinking " report 2006]
So you see you should care. Because you could be the one injured or killed by a drunk driver. Or someone you love. And even if you still have no compassion, these deaths are costing you money - because you have paid for the education of these students through your taxes and all that money's been wasted because these people have died before they've been able to pay back those costs through their taxes.