system
Given the following post, respond as if you're commenting on Reddit:
human
Why is Slave Morality bad, or why does it have a negative connotation?

I find Nietzsche insanely difficult, but from my understanding slave morality encourages weakness and turning the other cheek and instead defeating your enemies through deception. (?)

Why would anyone think this is bad for society? Would not master morality, or people doing things claiming to follow master morality, cause a lot of wars and duels and general risks? 

Are there any writings that straight up says slave morality is good for society, or is that considered embarrassing to admit?
gpt
Slave morality has negative connotations because of its name and because Nietzsche criticizes it. So, for those who don't understand or misconstrue Nietzsche's points, often conflate the criticism of slave morality for the appraisal or approval of master morality. This isn't so. He is disapproving of master morality as well. 
  

  
His work, the genealogy of morals aims specifically to understand the origins of how our moral system has originated. His conclusions are rather sinister. One particular point he emphasizes is the switch in dichotomy between good and bad into good and evil. The primary motivation for the arising moral systems from this new dichotomy (good vs evil) arose from slave morality.

The primary motivating force that drives this new moral system of the slave, is resentiment, this hatred, for the slave's deemed oppressors. He uses this analogy to demonstrate this:

""And when the lambs whisper among themselves, 'These birds of prey are evil, and does this not give us a right to say that whatever of the opposite of a bird of prey must be good?', there is nothing intrinsically wrong with such an argument - though the birds of prey will look somewhat quizzically and say, 'We have nothing against these good lambs; in fact, we love them; nothing tastes better than a tender lamb.”"" - Geneology of Morals.

What's important here is that it demonstrates two points. The first is this idea of resentiment. The lamb is frustrated and filled with hatred for the birds of pray, unsurprisingly. And the second is this idea of redefining goodness into this "moral good." In the case of the lamb, their ideas about what is good is purely stemmed from this resentiment. 

This alludes to his historical examples, using Christianity as an instance of slave morality. This results in some kind of divine vindication. The slave will suffer now, but god will be the final judge and the master will inevitably be punished for their transgressions. 

To Nietzsche, this is incredibly dangerous as it keeps mankind weak. Because the primary motivating force behind the moral system of the slave is based on resentiment, it results in this value of weakness or generally, attributes that the master does not have. If the master represents strength, the slave must represent weakness- therefore, like the lamb said, the master is evil and thus strength is evil and weakness is good.