The UN is an easy target these days, but it can only be as good as the nation states that are in it. Thus the mess. I think the UN needs to be reformed, but as long as there's no alternative to it, I think it would be an enormous mistake to get rid of it. We already have too many wars, and without a platform like the UN that at least attempts to bring governments together to discuss issues, we'd be worse off, IMHO.