There are some people (such as myself) that not only like having showroom condition paint on their vehicles, they actually enjoy the process of doing it.
So do I in both cases (great mental therapy), but on a daily driver with all the crud floating in the air and rain, I would need to do this a many times a year.
It being my car, a detail takes me a couple of days at least, but then you could pass it off as new in a showroom. That much time I do not have for a daily driver. As for the P car and motorcycles, that is another story.
As someone else stated, I also care more about its mechanical condition. Chrome won't get you home...ask a HD rider.