I honestly love Dres. Sorry if that's a sharp contrast to your beliefs, but I do. I love the color scheme. The light grey (with hints of tan) and that deeper grey contrast very nicely, I think. It also has a "Dresteroid" belt you can reliably find mining asteroids in, and an easter egg on the surface that I think is very fun. I also like Ceres, Dres' IRL equivalent. I think the name Ceres sounds nice. I used to "hate" Dres when all I knew about it was that it's orbit really sucked for transfers. But then I saw the surface first hand, and it's been my favorite ever since.
You could say that Moho is worthless as well, after all, it's a small rock orbiting the sun. But so is Kerbin, and Eve, and Duna...
And the moons too, Mun, Minmus, Tylo, Ike...
Don't get me started on Gilly, though. Talk about your captured asteroids.