Well I couldn't see all that well through the windshield of my truck anymore so I figured it was time lol. And of course the wifes car was hit with the overspray so I had to wash it too. Keeps me in her good graces.
Avoid black at all costs, a wash only lasts a day before the dust settles and makes it look dirty. On the other hand, I had a white car that would only get washed 2-3 times per year. I miss the old girl.