I agree. I actually love the "dirtyness" of the characters. They can't get dirty enough for my taste. I think the dirt adds character to the game. It's little touches like this that distinguish Skyrim from most other games (including Oblivion) which feature unrealistically perfect characters. I particularly dislike games (and mods) that make characters (male and female) look like waxed, manicured, meticulously coifed supermodels.
But I think you and I are in the minority on this issue, PhonAntiPhon.
I'm actually with you on this too. I feel that preserving the artistic feel of the game is important. This is another reason why I'll use a mod that makes the game higher res, but not one that uses a totally different texture or a different feel from the original. The exception to this of course is if the artistic feel isn't really present enough (like it was with a lot of Oblivion).
I like the dirt and stuff on the characters. These are hard working people. They fight, adventure, travel, sell wares, harvest plants, raise horses, etc. They get their hands dirty! They're different from our culture that stays indoors for the most part. So I think it's good that it shows.
My main other issue with body mods though is that it makes the game drastically less...real. I don't think men and women who are hard workers like that are going to have proportions like the ones that are used in most of the suggested body mods. Round curvaceous body, and large briasts on a woman who runs a lumber mill? Or is out adventuring all the time? Runs a farm on her own? Is a bandit?

My friend also said a pretty funny anology about this a while back about Oblivion:
"The main thing about these body mods that most of you don't realize is that it's not realistic at all, but makes your game a lot more unreal. Because if you use these, all the girls have plastic briasts that look perfect and round butts that are too round to fit in the armors, and then all the males look like they trained to be a superhero. That's not realistic, the stock models are a lot more real, because they are all normal. What these body mods do, is make everyone abnormally handsome and good looking, something that is worse than having all of them look normal.
I feel instead...it should be this: Armor Mods. Like making an outfit for a blacksmith but making him fat instead of the vanilla size. That way the mod will always work with everything, and you can have any freaky looking character you want and they will become unique instead of making all girls look like pormstar, and all guys look like athletes.
...a world filled with Brad Pitt's and Angelina Jolie's isn't real; it's a nightmare. For beauty to be special it needs to be unique. If everyone looked like a supermodel, things become so fake. It's like watching BayWatch where you can only get-in if you have rock-hard abs and silicon implants. This has been tackled the wrong way. Armors would have made a much better job. Yet everyone tries to reinvent the wheel when it's already rolling. Instead of making it roll better, they put a bigger tire, and then people try to adjust the cars to these tires... it should be the other way around."
His quote had me thinking about this too, that maybe we are going about things the wrong way? Like for example, I really like what Prometheus did by making an alternate body
but uses the vanilla textures as its base. That sort of thing could be adopted and adjusted to vanilla stuff, to make things more unique. But when everything is made to conform to
some specific body mod and texture set that doesn't go with vanilla, then I think it creates a huge rift, and then everyone is fighting over compatibility, realism, and everything else.
But that's just my two cents.
Also, is there any mod out there that keeps vanilla textures...but just fixes the bad feet? That's something I can totally agree with fixing, because THAT'S not realistic at all. lol