Underage drinking may not rise too high on anyone's scale of criminal malfeasance, but, it IS an unlawful, unhealthy, and a delinquent act that can and far too often DOES lead to other problems - including more serious criminal acts.
Getting caught ONE TIME for underage drinking can be detrimental to one's future. It can restrict access to scholarships, schools, employment, and even certain types of jobs including the military. Unfortunately, this is a difficult thing to relate to kids who think they are immortal and that negative consequences won't happen to them (these things happen to other people, not them
).
I, for one, am not going to simply write off underage drinking as "kids will be kids," because it IS dangerous. Yes, a lot of kids do it ... a lot of people also shoplift, drive drunk, and engage in underage and unsafe sexual practices - that doesn't make any of those things "ok", safe, or something we should simply accept.
In the case of the OP's kid, he engaged in more serious criminal activity either as a result of his drinking, or, in order to engage in drinking. Sorry to say that such things are not all that uncommon among frequent underage drinkers ... and, just as sadly, frequent underage drinking is also a common denominator in the overwhelming majority of delinquents that eventually end up in prison. It's one of those predictors that researchers have identified that can determine if a life of crime is likely in one's future.
Ah, well ...