That's not true.. there are very nice drunks. You've never met someone who was drinking who was really sweet...overly nice. In fact, I dated a guy and it got to the point that (and this was really wrong) I encouraged him to drink becuase he became nicer and more affectionate.
No, sorry. Nice isn't the word. Lubricated and talky, blubbering and nostalgic, like a character out of Russian play or novel, maybe. But haven't meant anyone that drunkeness improves on a consistent basis.