I don't know, High Elves would have to be right up there. They're actually extremely similar to the Dunmer in many ways.
Yeah, but the Dunmer were just Aldmer who turned away from the traditional teachings to worship the Daedra. So it was like the Altmer AND Daedra worshipers. Dreadful. I think they might have been the only race to
dominantly worship Daedra as the primary gods. All others worship(ed) various Aedra, Lorkhan, or cultural heroes. Of course, eventually the Tribunal came along and changed some of that, but still, most of the general beliefs remained the same, as Mephala, Boethia, and Azura were still revered. If only the Dunmer really followed the teachings of Vivec.
The Altmer are definitely quite obnoxious in their own right though. Perhaps worse in some ways.
Also, I'd like to ask the exact opposite of the OP, why do you guys like Argonians so much? They're my least favorite race (which isn't saying much, I still really like them!) and I can't get into playing one at all. I barely understand how the Argonian's think, I couldn't possibly roleplay as one. Plus, it's a lizard-person. They don't look like me, talk like me, or even
think like me, how could I relate to them? I could maybe play as a Khajiit at this point, because I've learned a bunch about their culture and general mindset. With some effort, I could get behind it. With Argonians, we know so little, I would hardly know where to begin.