Why are CN readers so bloodthirsty?

Like someone else said, the bloodthirsty readers don't do this just for CNs, but also any novel. I've even seen this in reviews/comments of some original fiction on royalroad. The amount of commenters calling for blood was overwhelming. Even though it didn't fit the world setting or the MC's personality at all. And at least one author listened and changed the story because of it. That was a few years ago, and one of the bigger reasons I stopped reading there. I didn't want to see more stories get changed and twisted just to cater to the loud cries for murder, torture, and blood.

I think the one who said that 'reading CN's subconsciously effects people and how they approach problems' is right. 

 

Well, @Nightow1, it's impossible for others to understand your psyche enough to give proper explanation to your mood swings, except shrinks and yourself maybe.
And that whole running gags between Batman and Joker was indeed very grating. I got annoyed by both of them anyway. But I'm kinda skeptical about the slippery slope of killing for self-defense, like playing judge, jury, executioner and god by oneself. So if disabling attackers was possible, avoiding killing was better option for me, for who am I to judge others? and I have no right to take away others' lives.
What I talked about was my own observations on only Chinese literature tradition and its pervasive, long-lasting influences on local norms. Just like fantasy theme stories were popping up one after an other after the success of Harry Potter series.
I didnot claim to make a 3000 pages dissertation on which degrees any locals within any possible cultures were influenced by any possible combinations of different types of cultural inheritances. 

As someone who stopped reading "those kind of novels", what I remember (and read from a few reviews as well) is, that chinese MC's in those settings are whimsical a**holes who fly into a rage whenever the author wants them to.

The problem is that they tend to lack consistency in their decisions. You want to be a bloody avenger, that's fine. Either I like it, or I'll stop reading. You want to be a f*cking beta who forgives everyone despite them not showing any remorse and it always coming back to bite you?Yeah, not gonna read that one, seriously why do people still trust you to protect them when all you do is saying "bad rapist, don't do let me catch you again" before leaving him in your daughters bedroom WITH YOUR DAUGHTER?
You want to go the middle ground, killing if you have to, but sparing those who show that they can change? Now we're talking.

chinese MC's tend to just roll a die to see how they should react. Sometimes it's logical, sometimes it's just freaking stupid, and sometimes they react forgiving, because the offender is a (new) waifu they want to bang.

The problem is not, that they are "too bloody" or "not violent enough", it's that they simply lack the Spoiler: Tegridy. 

To be perfectly honest, I'm sick of the whole "exterminate all threats to prevent future troubles" rhetoric, both from authors/characters and from readers.
It makes sense sometimes, but I've seen far too many cases in stories where that is the thing that actually caused more conflict rather than solve it. 

It's an old term, it's called honour and reputation, it's been around for even longer than CN novels. A classic example would be from Japan where Mitsuhide betrayed Nobunaga because Nobunaga publicly insulted him. This was somewhere in 1579(?)-1580(?) so it's hardly new.

Westerners call it rep or street cred. 

hm....
from imperial age, there were tyrannical kings, who just beheaded, kill, hanged those who maybe only took glimpse of His Majesty face....there's that
the Martial Arts world is no better...it was kill or be killed situation mostly
almost the same as Cultivation world (era???) ...most of these opponents were not only humans, but immortals, demons, sacred beasts (or just beasts)

it's not that they wanna be bloody...but history and legends were not helping them either

to make things more interesting and dramatic (like how all story must be), they didn't even kill their opponent, they just make their opponent suffer as in 'don't wanna live anymore' situation... because death is easy but live is tragic.... 

Most courtiers didnot have their own harems with hundreds of beauties. On the rare cases, they were painted as greedy, lustful, corrupted, evil authority abusers. What made the emperors who shared the same symptoms labelled with something different, like "virtuous", "wise", "honourable", "heroic"? ("The whole package deal must be judged, or we would get a "hard-working, self-disciplined bank robber" as a virtuous person"). Unless such behaviour was permissable to only them because they were the biggest badasses, no one could stop them from doing whatever they want.