Most universally hated genre of music?

oldschool emo is awsome. But yes I agree.

I fucking can't stand techno myself. I've tried to get into it so MANY times...
 
I know most people who I have talked to,dont like Techno.

On a personal level I can't stand the majority of newer stuff (there are a few exceptions), but it's a world away from the Detroit techno scene that started it all. The likes of Jeff Mills and Plastikman shit all over the stuff being churned out in recent years by Carl Cox and Sven Vath.
Techno has a huge worldwide fanbase, it may be harder to understand the appeal to non-fans than most genres, but I don't think it is the most universally hated.

My initial reaction to the question would be to say something like drone or grindcore, but they are pobably not widely enough known. 'tis a toughie...
 
Techno as in Tiesto? Its shitty but it isn't hated universally, quite the opposite I find.

Or Techno as in general Electronic music also doesnt count



id also have to say something like grindcore
 
I think Happy Hardcore could be close, but I would say the same things on it's appeal that I did for techno. The biggest clubs in Europe regularly sell out Happy Harcore nights and happy hardcore compilations are huge money makers.