First off, a most inspiring response - but holy run on sentence, Batman!
War is merely a word we use to describe a struggle between two parties. This can be between your own psyche vs the needs and wants of society or between two nations. This is important - war is everywhere. It is this struggle and this unwillingness to compromise our ideals that makes us great. Diplomacy, morality - these are merely tools in which we can conduct war on a verbal and emotional level. Political maneuvering is war. Office politics is a war. That argument you had with your girlfriend about who gets to take the trash out is a war. Compromise, sacrifice - more weapons. Instead of damaging us physically, they afflict us emotionally. Society constructs around us the ideal that no one should have to give up too much to do what they want, the restrictions they place are imposed for the greater good. Can you live without a social construct? Will you be able to operate essentially as a hermit? What about your need to reproduce? What about your need to seek companionship? Are you going to deny all this because you have your intelligence and morality to fall back on? These are higher things which a mind cannot be fulfilled with if its baser instincts are not requited. Let's say, for instance, your dream job is to be a professional luthier. Making guitars, violins, etc is your job. You are the head honcho. Everyone is buying your stuff. But you have no friends, your workmates hate you, you have no family, you can't feed yourself (after paying your staff, shop costs, etc), you have no money, you can't afford a house but you've still manage to churn out really good instruments day after day. How long would you stay in a job like that if another was offered where you're working in a tight knit team that is almost like family, it gives, you housing, retirement benefits and the occasional deep sea fishing trip where you met that enterprising young woman last time by the docks?
Your turn! [My entire argument is based around Maslowe's "hierarchy of needs". Poke holes in it!]
True, the human psyche is made for a 'group' we are one of the rare creatures between solitary (mooses and the like) and massive herds (Wildebeests, Fruit Bats), we are in a rare slot in the world where our group is large, but we require knowledge of who is in it; like lions and elephants. Our instincts, however, are less strong than that of an animals, we can overcome our fears, whereas a guinea pig even if it knows that you are the life giving hand that feeds it, will still run. We are open to change, whilst our bodies have stopped evolving, our minds do instead; in the 50's people like Lady Gaga (whom, for the record, I dislike) would be arrested for indecency, whereas today she is given a hero status, if humans decided to live as hermits it would become the norm, because of the same adaptiveness that makes us able to survive anywhere from the Artic to the Sahara out of necessity, so to, can we, change our ideals. You can not deny that our ideals have changed immensley over time.
The human psyche can survive in the conditions described, the greatest people, in fact, take Henry Ford or Isaac Newton two of the greatest contributers to society, both battered by oppression, even Hitler was fighting what in his twisted mind was perceived as oppression.
Humankind only advances through struggle, all famous inventions are created from struggle, be it against society or another country, all heros are made from struggle. I would go so far as to say that humankind
needs an oppressive influence to become more than it is. If that oppressive influence needs to be isolation from the group, then there will be someone who will do that. A humans actions are not pre ordained by evolution unlike a mouses, humans do different things in the same circumstances, whilst most will be bound to their group (be it country or family) mut some will not, due to the fact that a persons 'instincts' are moulded by indivindual experiences, not by experiences as a species, which is what differentiates us from animals. Whilst animals instinct can be moulded to a point, their psyche is far less malleable than that of our own.
I know it seems rambly, but I was up all of last night because my son was sick, but I hope I stuck to the topic and didn't misinterpret/ignore what you said