Well, I feel very different than you, but that's OK. I just... can't understand where you're coming from. I feel like RSE was a horrendous nosedive from which I didn't think the franchaise would recover. Its just... Like if you shoehorned the anime into a Red Version cart.
If it weren't for the severe jolt of Nostalgia I got from the anime, I'd utterly despise it, too.
Now, I loved G/S/C too, and really liked it because its pretty dark for a pokemon-related thing. I mean, the experience was that I played sportsman using my skills in raising pokemon to stop gangsters from abusing animals.
Diamond and Pearl, for me, were them picking up the pieces after having crashed the series with R/S/E, and turning it into something new and cool. Rediculous, cartoony designs? Hell yeah, let's embrace that! Crazy, stereotypical anime bad guys with good ideals? Let's go with that too, then. Rival confusion? Um, have more likable characters and more tough battles?
From what I've seen, Black and White are building upon everything Diamond and Pearl did right, along with throwing in some of the things they forgot in G/S/C, and try to put it in a whole new setting. I'm waiting for a price drop or two, but I bet I'm gonna love it.
Oh, and one more thing that I like from Diamond/Pearl: a feeling of use for training pokemon outside of the metagame. I'm glad to see that they're really embracing the full level scale, rather than stopping at level 55 like in the original. I went back recently to my Blue version, doing a Poison-type run, and thought to myself: I just kicked Koga's butt ten levels under his weakest mon. Why should I bother putting any effort into training?
That's just one factor that's going to be there, simply because the game industry has grown up a bit.