I rarely meet a politician that I don't like personally. They are generally well endowed with charm. Therein lies the danger.
Never fight an inanimate object.
A world government run by the UN will be like getting an old, purblind, half-deaf substitute teacher.
Zero-sum thinking is an obsession of mine, but mostly in economics.
Never wear anything that panics the cat.
It is a popular delusion that the government wastes vast amounts of money through inefficiency and sloth. Enormous effort and elaborate planning are required to waste this much money.