The warranty is a sale pitch, any vehicle can make 100k miles with proper maintenance it's what comes after and KIA doesn't have it. Expensive to keep on the road when the mileage and age gets up in numbers.
I'm not saying I disagree, and I have never owned a KIA, but why doesn't every other car maker offer a 100k warranty if its simply a sales pitch? You think if someone like KIA can offer it, then so should everyone else.