Actually, I agree with you. Perhaps it's because I'm from the Japanese school of manga and anime, but I really hate all these stories that promote killing, ruthlessness, etc.
SecretWolf Other ideas such as
- dangerous adventures always bear fruits
- Mc is always right
- how morality is twisted for many of MC's actions
- Idea of perfect love (finding perfect fairy's no problem with them or their relationships)
These are what I hate about many of the Chinese-styled stories too. Tales of Demons and Gods, in particular, where Nie Li is always right because he is the protagonist. It doesn't matter if he does something that I - and normal people - would condemn (such as humiliating and bullying one of the heroines' father), he is right because the author says he is right. And I hate that sort of nonsense.
It gets so bad that whenever I write a story, readers complain and flame my protagonist for being "stupid" or "spineless" or "retarded" because he doesn't kill an enemy. Like, what the f? I find it disturbing that so many readers are bloodthirsty and calling for psychopathic protagonists like Chen Bei Xuan. They want all protagonists to be like Chen Bei Xuan, who kills all four generations of a family who attacked him, and doesn't hesitate to kill people for insulting/offending him. Just a single verbal insult and he kills them. Like, seriously? That's the sort of protagonists people want? And if my protagonist doesn't do that, you're going to flame my story and characters?
It is also why I hate cultivation stories. You hit the nail on the head - the objectification and casual dismissal of life. Maybe I'm used to Japanese light novel stories (with a lot of exceptions, like the revenge stories) where the protagonists are "pacifists" who don't kill unless absolutely necessary, but I find it disturbing that most characters are treated as caricatures. They exist solely to attack and try to kill the protagonist, just so he has an excuse to murder them. The execution of such stories is just...terrible. 9 out of 10 times, the male character who shows up is a violent, greedy, psychopathic, muderous rapist who is either jealous of the protagonist or desires his lover, and does all sort of nonsense to kill him. And then the author or characters would justify it as "survival of the fittest" or "strong eat the weak", never mind that sort of mentality makes no sense. Oh, as for female characters, they only exist to be added to the protagonist's harem. I think it's kind of disgusting.
I don't turn a blind eye to killing and poor execution or poor writing. Also, again, I don't know why you are comparing harem and killing/violence to magic/flying. They are two completely different things. Nobody is being objectified just because the characters use magic or can fly. Characters aren't two-dimensional if they can fly or use magic. However, if they exist just to kill and get killed (caricatural villains) or just as trophies to be added to a harem, then yeah, I think there's a problem.
SecretWolf Harem has bases in real life so it should be more acceptable than other genres
This is not about acceptable or unacceptable. I don't even understand why it should be more acceptable than other genres...just because it has a basis in reality? That makes no sense at all. Why are you even comparing it to other genres in the first place? Other genres get similar hate too. Some people never read sci-fi because they find it boring and they can't stand all the pseudo-scientific jargon. Some people neve read fantasy because it's, as you say, unrealistic, and they prefer crime novels, for example. But that's not the point here. The thread is asking why people hate harem stories, not why it's less/more acceptable than other genres. It's meaningless to compare because each genre has its supporters and detractors. It's like saying, "you like apples, why can't you like oranges as well?"
Also, the problem is not
SecretWolf accepting their immortal lives/magic and other fantasy elements,
The problem is the way harem stories are executed, the way writers objectify women (or men in otome stories), and the degrading depiction of characters. It's not about belief or acceptance or whatever. Of course some are executed better than others. I like Gotoubun no Hanayome, for example. It's an example of how to write a harem manga without degrading the characters - each of the sisters has their own charms and can live on without the protagonist, Fuutarou, without throwing away her self-respect. They aren't desperate, mindless heroines who exist solely to cater to the protagonist, each of them has their own goals, dreams and lives.
Again, the topic isn't about how "harem" as a genre is problematic, but why people dislike the majority of current harem novels. And it's not because of the genre itself but the way these writers execute it.