I think you've identified what Steven Pinker calls the contrast between the "utopian vision" and the "tragic vision" (based on an earlier concept by Thomas Sowell, plus of course numerous other people throughout history who have noticed the same thing in different contexts). The original meaning of those terms is political, but clearly there are also correlates in all other areas of life. So, you are likely pointing out a real contrast.
However, for some reason, you have decided to word your post in extremely loaded terms, to the point where you are getting into contradictions in terms. (How can things with "obvious appeal" and those that "everyone finds pleasant" be disliked by anyone?) This results in many inaccurate and imprecise points throughout your post, which I'm not going to address in detail, so I'll merely point out your greatest mistake.
Namely, you assume that whenever "anti-nice" people express dislike for things that have appeal to the "pro-nice" side, this must be because they also perceive them as beautiful, uplifting, etc., but they nevertheless prefer to find some sort of perverse joy in opposite feelings. Yet, the saccharine produced by the "pro-nice" side can be honestly felt by others as the most awful soul-suffocating ugliness and dehumanized cant that breaks one's very will to live. The same holds for the "cool/novelty" factor that the "pro-nice" side strives to introduce into everything (the prime example being modern architecture).
Because I actually want to know what's going on, I'd like to see what you'd say about the perspective opposite to the "pro-nice" one. (And I'd want to know what you'd name it, because in retrospect "anti-nice" is a loaded word.)
If at all possible, I want to keep this from being a simple political dichotomy. "Pro-nice" perspectives are certainly utopian, but they're not all the same kind of utopia (in fact, some are nostalgic rather than futuristic.)
Also, I never thought of modern architecture as being "pro-nice," f...
EDIT: This post is pretty flawed, but please read the comments anyway: I'm hoping to rework it into something that catches the idea better.
You can view a lot of value differences along a pro-nice/anti-nice spectrum.
Pro-nice people (I'm one) gravitate to obviously pleasant, lovely, happy experiences. We like kittens and puppies and rainbows. We like transparently "happy" music and transparently "beautiful" works of art and literature. (If you like Romantic poetry and science fiction, but not contemporary novels, you might be pro-nice.) We prefer the positive social emotions, like sympathy, encouragement, and teamwork. We may choose intellectual interests based on the fact that they make our brains feel good. We tend to be drawn towards proposals for making the world wonderful.
Pro-nice people aren't quite the same thing as optimists. An optimist tends to anticipate that things will turn out well, or look on the bright side. But pro-nice people may well hold pessimistic ideas or have melancholy temperaments. Pro-nice is a preference for the positive. A typical pro-nice attitude is "Humanity may be destructive and cruel, but the one time when we're at our best is when we're doing science. Science is lovely. I think I'll be a scientist."
Anti-nice people have a preference for the difficult. They find pro-nice preferences saccharine. They like artistic expressions that have a challenging or negative "mood." They prefer the negative social emotions, like antagonism, sarcasm, and cynicism. They dislike things that have obvious appeal, or things that everyone finds pleasant. As far as social issues go, they take a keen interest in potential catastrophes and what must be done to avert them; they generally aren't drawn to proposals to "make the world a better place."
Again, anti-nice people aren't necessarily pessimists or unhappy people. Anti-nice people prefer to direct their attention to the challenging, the problematic, the worst-case scenario. To an anti-nice person, there's nothing interesting to work on when everything is going smoothly; just liking things or agreeing with people or being contented is rather dull.
I suspect that a lot of conflict can be summarized by the clash between pro-nice and anti-nice personality types.
Are you pro-nice or anti-nice? Have you experienced difficulty communicating with the other type?