I don't mind the legendary ring quest all that much to be honest. It could be.. more fun than GO COLLECT 10 BEAR ASSES since people have been complaining about bear asses quests for the longest time now, what makes you think a legendary questchain should be nothing but that? I guess at the end of the day no matter what they're going to be grindy, but the first half of the chain was awesome imo. Dungeons, exploring, Garona, etc.
I like the lore and story around it, I like the item itself, but eh?
However I don't know why people passionately hate it. I see a lot of people complaining because they have alts they don't want to do it on, and to me that's sort of a good thing. It's a fucking legendary item. This isn't Diablo 3 (yet), they shouldn't be handed to you at all.