The UN's purpose is

"To maintain international peace and security, and to that end: to take effective collective measures for the prevention and removal of threats to the peace, and for the suppression of acts of aggression or other breaches of the peace, and to bring about by peaceful means, and in conformity with the principles of justice and international law, adjustment or settlement of international disputes or situations which might lead to a breach of the peace;"- United Nations Charter, Chapter I: Article 1: Section 1

the other sections reference international friendship and equal rights, but section 1 is the meat f why it exists, the UN was created after two World Wars, it's primary goal is to prevent a third and has so far been overwhelmingly successful.

I'd rather the assholes of the world think they're accomplishing something by writing bullshit resolutions rather than dropping bombs.

We just have to not take the UN seriously while still having the authoritarian assholes think the UN is serious business.

The Security Council is the only thing that ever really mattered anyway. Having the nuclear powers have to sit in a room together is important. The General Assembly has always been a clown show.

We have a bunch of alliances between democracies (NATO and other alliances) and the security council because we have to negotiate with the authoritarians with nukes. The minor despots can have the UN General Assembly to clown around in. Better to have petty narcissistic dictators throw their tantrums in the UN GA rather than expressing their feelings with their military.