Actually, I don't think there is one single manga or anime where I didn't even feel a little happy or sad for a second about what a character in it did.
Otherwise, I wouldn't watch anime nor would I read manga. In the end, it's part of the reasons why I read them. To feel happy, or sad depending on the story.
In better mangas or anime, more of my emotion get involved in the whole plot, therefore it's more interesting. If that's not the case, I normally stop.