Drinking responsibility: Is it individual? Battle Buddies? Command?

Assume that the command gives regular safety briefings regarding alcohol consumption and that your battle buddies are not force feeding you alcohol, consider this scenario:

You go out to a bar with friends and everyone is over 21. Everyone else manages to drink responsibly and have a good time. You, however, go too far. You have so much to drink that you have to be carried from the bar at the end of the evening. You end up throwing up all over yourself and the designated driver's car. Your buddies get you home safe and sound.

The next day, you are sick as a dog with a pounding headache. Who are you angry at? Does your age/rank matter (should a PVT/LT/a person newly 21 be better supervised)? Is it the Army's fault for some reason? Your buddies got you home safely, but should your buddies have been more responsible about supervising your drinking? Should they have attempted to prevent you from getting as drunk as you did?