Some liveries are really good and/or cool, but for every good and cool and unique livery there are a hundred uninspired boring drivel. I mean how many times must I see a Castrol Toyota, or a Jagermeister E30, or another NASCAR livery that has no place being on that car?
People that upload things like those to me are people that lack imagination, skill and creativity. I guess in the end I prefer the original liveries, the obscene or downright weird oddities over recreations of real world liveries. Same goes for the decals too, but I digress.