It has been my experience, however, that the majority of acceptable factory paint (meaning paint that doesn't fail) examples that I have seen were more durable, less chip and flake prone, and also were more tolerant to moderate abuse than many of the aftermarket paint examples that I've experienced. It also goes without saying that the quality of the paint process will play a huge part in the paint's behavior and life.
Unless I were restoring a classic or building a custom show/street vehicle, I would never repaint an acceptable original finish on a car. The reason for this for me is threefold. One reason is that a good quality repaint that would be as durable and as consistent as a factory paint process would involve a considerable amount of labor in removing ALL of the previous paint, including the door jambs, and under the hood and trunk, and corners etc. Secondly, aside from even spraying, which probably can be done well aftermarket, drying tolerances, electro magnetic bonding (on some cars) and curing temperatures may not be done at the same quality as it would be in a factory setting. Third and last, the cost of a well done aftermarket paint process would range a considerable amount of money, and given the relatively high depreciation rate of most regular use cars, it may or may not prove to be profitable in terms of increasing the car's value (a return of investment, if you look at repainting to resell a car).
