Congratulations, you've come to the same realizations as every other person ever. Such a deep thinker you are
The same conclusions as every other person? What the fuck. Maybe it's because I live in the Deep South, but everybody here is like, "Why aren't we in the fucking Middle East killing the shit out of those fuckers!"
Generally, there's three things that keep a person from being hostile.
1) Tribalism (people just have an evolutionary knack to want to avoid killing members of a group/family that they identify themselves with).
2) Fear of death.
3) Fear of punishment, usually the law.
Let's take that to the next level, and it's the same thing in the context of society.
1) Nationalism. (the granddaddy of Tribalism)
2) Fear of defeat. (the death of the individual is no longer a concern, it's defeat that matters)
The fear of punishment, usually the law becomes much less of a factor because international laws are new and rarely enforced. They're also only enforced if you are defeated. No Allied commanders in WW2 were tried for war crimes even though there were plenty of instances of them committing war crimes as bad as many Germans who were hanged.
Now, when you remove the fear of defeat as you would with any society that either has or overestimates their technological, military, or manpower advantage of another group and you find that they become overtly hostile.
Great examples include:
* Rome during the Third Punic War, where they kept leveraging increasingly absolutely unrealistic demands on Carthage so that they would have an excuse for war, to burn Carthage to the ground, and to erase their culture from history.
* The Middle Ages, when Knights had fanciful expensive suits of armor that made them near invulnerable and they became overtly aggressive towards other religious groups and their neighbors.
* Ottoman expansion into the Balkans, Constantinople, and then Europe by Mehmed II. (had a massive # of men and cannon)
* In modern society, with all the False flag operations to incite war, and especially in almost every single US war post WW2. If Iraq had gone as planned, nobody would be apologizing for it, we'd have then gone to war with Iran, and so on. We'd have only stopping until we were defeated. Same thing with Korea (A-bomb advantage) and then Vietnam (defeat).
You remove these factors and people are fucking animals. The best example of this is in Ultimate Online.
There was no fear of death, nor any other real consequences.
There was no fear of punishment, by the law, rules of the game, or anything else.
There was no tribalism, everyone was anonymous. Guilds solved this to an extent and people wouldn't PK guildmates out of malice.
What happened? Over half the population turned red and started becoming overtly hostile towards the other half. Hell, you could have nothing on you and people would still burn your ass to the ground for no reason other than to be an asshole.
That says a lot about us, as our fear of losing/getting punished is really the only thing keeping us from killing one another. Can Tribalism ever become globalized so that we identify with one another as a SPECIES instead of by ethnicity, religion, or nationality? Maybe, but it's going to be really fucking difficult and take a few generations. It's our only hope of not starting nuclear war. Hell, within our own country we have our own whites vs blacks tension brewing. In the EU, it's natives vs immigrants leading to Brexit, which was a huge setback. In Iraq, it's the Shiites and Suunis.
What's the solution for all of this? Can the internet and mass media bring us together? I hope so. And can we please stop referring to the Russians and Chinese as "our enemies"? We aren't at war with them, yet. I have no desire to go over to China to kill Chinese people, they aren't my enemy. Hell, if I was drafted I'd refuse to fight unless I thought there was a legitimate reason to fight. North Korea & ISIS, which have an lot of irredeemably brainwashed people could possibly fulfill that criteria for me.
Skroth - Game of Thrones Wiki - Wikia
"The novel A Song of Ice and Fire clearly states that "the Others" ("White Walkers" in the TV series) speak a language with the voice "like the cracking of ice on a winter lake", but the name of the language is not given."
Regardless of the official name, they still communicate and have a language. This is indicative of intelligence, which leads to logic, which leads to reason. What is the reason they are attacking men after 10,000 years?