Mecha - because it's dumb. There are exceptions like Bokurano, Macross Frontier or Code Geass, but in general I hate mecha
Sports - most boring genre in the world
Martial Arts - just make a fantasy manga because in the end you're going to introduce physically impossible attacks anyway. And if you won't then it'll be boring.
Ecchi - I don't like it when authors treat the reader like a 7 year old boy who just learned that looking at and talking about boobs makes him more grown up.
Hentai - Because it's gross. Who the fuck loves meter long boobs, two meter long dicks and buckets of weird yellow liquid or texts like "It's piercing my abdomen!". Worst porn is better than that.
Romance - I love good romance, but 99,99% of romance is so ridiculously bad that it makes me want to puke. I pretty much only like stuff with a lot of angst (
Girl Friends is my all time favorite, I also like
Orange Marmalade.)
Harem - Just no...
Also, anything that's easily classifiable as Shounen/Shoujo/Seinen/Josei. If you're trying to make something that a given demographic will like rather than creating something you want to make, how can you even call yourself an artist?
Quote from Karonhioktha
Agreed. I was originally gonna make a post about not wanting to ever read BL or GL (even subtext, slash and "bromance" bother me), but even if a person told me "Try this one, it's a nice, fluffy, light read", I wouldn't bother to look into it. Even if the story is good and everything, I know that the subject matter will bother me and make me stop reading ASAP. It bothers me that much.
I'm sorry if my views of BL/GL bother people, but I will never read those types of manga.
That kind makes me sad :<
That said, I have never tried any Shounen Ai and don't really want to. Men just don't strike me as a gender fit for romance, but I'll gladly read anything that has good romance so feel free to recommend something. And if you want a challenge then try and find a Yaoi that I will like.
Also, I have a general dislike towards high fantasy