You seemt o be under the impression that if we removed all the current "malevolent" infrastructure, in your opinion, that everything would be all fixed. But what you fail to realize is that these systems sprung up in the first place because of basic human nature and interaction.
I'm not even trying to relate this to anarchy or dismantling infrastructure, unless you're referring to my description of the military-industrial complex, but it would be difficult to argue that isn't an inherently violent institution. I'm just talking strategies for dealing with violence.
And we've had the discussion about "human nature" before, which is a concept I reject. I'll only reiterate the most relevant point, which is it's easy for various qualities to seem like human nature when the system we live by is designed to reward those qualities and punish others. Civilization and all its features and flaws are the product of logistical circumstances, not human nature, and the prevalence of certain human behaviors is only adaptation. The whole concept of human nature is the claim that all human beings share a specific few personality traits, which I find to be absurd.
Also, sometimes a short term-solution is needed, for those problems that get past the long-term solutions.
True, but this is way too often used as an excuse not to invest in the long-term, which is usually more difficult in the short-term.