The world is insane!
6.5 billion people believe in -and fight wars over- things which do not exist:
Governments, gods, global warming, national borders, paper currencies, nonbinding 'legal' documents, and the platonic poor. They pile into ridiculous schemes like 'universal healthcare', 'public education', fiat money, monopoly regulation, the illegalization of noncriminal activities, the legalization of actually criminal activities, and more generally the provision of and payment for 'government services' at the barrel of a gun.
But it's not a new state of affairs. The world seemingly has always been insane.
The fact that we could do without something does not render it nonexistent, simply unimportant.
Governments: Merely an ideal set up in order to keep some order, not necessary and not something to kill people over. If they choose to instate dictators as their leader, they get what's coming to them, and there is no reason for us to bail them out, other than to look good. Also, it usually involved killing many to save many, so who's worse, us or the dictator?
Gods: "My invisible friend is real, yours isn't. As such, I will kill millions of your people and heavily subdue the remaining huddled masses. After you have been tortured for 20 years, maybe then you'll see the light and worship my God."
Global Warming: There's multiple other reasons for there to be an increase in carbon dioxide, if that even is the cause. It's more of a "wait and see" thing at this point, so far as I know. Educate me if the situation is otherwise.
National borders: This is more of a battle for resources, not "my country is bigger than yours" bragging rights. Understandable in some ways, although the abolition of any borders or governments would solve this instantaneously. If governments everywhere were abolished, I'd probably cling to the intellectual few, and we could probably recruit some manual labor. Carve out a little niche in the Sierra's and feed on bears. That'd be the life.
As for the rest of what you listed, those are just PR moves by government. Politicians want to get re-elected? Feed the poor! Fund the churches! Cut taxes! Mass criminal round-up! Multiple ploys to look good and clean a filthy conscious, stained by unfulfilled campaign promises and dirty deals. It's a game of politics, and those that know what strings to pull and find what appeals most to a society that's getting increasingly humanistic are the ones that get re-elected, and can slide some of their personal desires into the deals they make with 3rd-parties and in the bills they pass in the form of pork-barrel spending.