I love XP, and will continue to use it. I "have" a copy of vista 64 ult installed. And thats just it, its installed. When I boot my pc up and use it for day to day, its xp all the way. I do use vista just for "exploring" it, and playing with it. But, for me. Vista, yes is good, and works for sure. But , its the small things that make it a annoying OS to use. thats why, for now, I use, xp. That just my opinion, please no crying and whining. Especially if your justifying your OEM installed Dell version of Vista home.
For OEM to continue using xp, i think its great. Please remember, we are not the only ones using these OS'S, companies and big entities alike are the MAIN REASON for sticking with xp. Most companies have there entire infrastructure built around XP, so yes, its VERY logical for them to continue using pc's with it. If its pre installed, even better. Saves thier IT guys the time of reimaging and licensing costs, aswell as its a good selling point.