From My Facebook Page Michael Laitman 3/1/18
The Meaning of the Custom to Get Excessively Drunk on Purim
After our salvation through our unity, the joy erupts, and it is a commandment to drink until we cannot tell right from wrong. This is because our unity spreads unity, until every person and nation willfully makes the right “click” to each other. By this, we become a “light unto nations,” a beacon of the light of unification for the whole of humanity.
By uniting, we would not need to watch our backs all the time like we do now. Also, we would not distrust or suspect any one of any devious or underhanded intentions, since we would be as a single person. Intoxication signifies the blurring of lines between Haman and Mordechai, since when united, the tension between these tendencies becomes released in euphoric joy.