I am going to venture out and say you have never built a motor on your own. Between constantly checking tolerances and every bolt and clearances, it is absolutely better when one person does it. Ive built a few motors myself for hot rods and it is definitely a love affair for me.
You have obviously forgot about German brands and they're pride. It might be marketing, but its also a sense of pride to say something is handmade. When was the last time you hand built anything and signed your name on it with pride.
Current Stable: Some Audi with a V10, Couple of BMW's, one F Car, and one P car. One lonely GT-R with all the Euros.